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minimis ; sepalis oblongis obtusiusculis vix ciliolato-glandulosis : petalis albis basi utrinque subunidentatis ; sinubus inter stamina dente brevissimo glandulæformi instructis ; stylis 3 ; stigmatibus subclavatis recurvis. – On Mount Bullion, Mariposa Co., Bolander. About a foot high. Flowers as much smaller than in the preceding as those are than in L. Californicum, even smaller than in L. Virginianum and L. striatum, Walt. (L. oppositi folium, Engelm.).. This differs from the four other trigynous species now known, in wanting the little appendage to the face of the claw of the petal, and the lateral teeth are less distinct. The three false partitions of the globular capsule are almost complete. (In the old Linum trigynum of our conservatories I can no more find even a trace of appendages to the petals in fresh flowers, than could Bentham and Hooker in dried specimens. So far as regards this species the genus Reinwardtia has no characters.

LINUM DIGYNUM: annuum, glabrum ; caule exili (spithamæo) apice subcymoso-plurifloro; foliis oppositis oblongis (lin. 3 - 6 longis); glandulis stipularibus nullis ; pedicellis strictis calyce brevioribus; sepalis oblongo-lanceolatis obtusis uninerviis , margine lacerato-denticulatis glandulosisque ; petalis flavis ; dentibus inter stamina nullis; stylis 2 liberis; stigmatibus capitatis; capsula quadrilocellata. — Mariposa Trail, Yosemite Valley, rare, Bolander. — Flowers small, but rather larger than in the foregoing. Petals not appendaged at the base. While all the other peculiar Californian species are trigynous, this is digynous !

LUPINUS BREWERI : fruticulosus, ramosissimus, cespitoso-humifusus, pube appressissima argenteo-sericeis ; stipulis subulatis ; foliolis 7-10 spathulatis cuneatisve retusis (lin. 3 – 4 longis); racemo brevi (pollicari) densifloro ; calycis bracteolati labio superiore bipartito; corolla violaceo ; carina vix ciliata. — “ Prostrate, trailing on the ground or on rocks, on the Yosemite trail, alt. 6,000 feet,” Prof. Brewer. Nevada near Carson, Dr. C. L. Anderson ; a form with flowers only 3 lines long, the keel not in the least ciliate ; while in Prof. Brewer's specimens the flowers are 4 or 4 lines long, and with a few hairs on the margins of the keel. — This ranks with the andine species forming Agardh’s tribe Microphylli.

LUPINUS LYALLI: fruticuloso-cæspitosus, nanus, hirsuto-sericeus : stipulis subulatis; foliolis 5 – 6 obovato-oblongis (lin. 3-longis) ; pedunculo scapiformi nudo bipollicari capitulum multiflorum gerente ; calycis bracteolati labio inferiore tridentato, superiore bipartito; corolla (ut videtur) saturate cærulea, carina nuda. — Summit of the Cascade Mountains, lat. 49°, Dr. Lyall (Coll. Oregon Bound. Comm., distrib. Herb. Kew.). — The short, tufted shoots spring from a woody base barely an inch high, terminated by the solitary naked peduncle, bearing a head (half or two thirds of an inch in diameter) of deep blue or violet flowers. Pedicels short: bracts shorter than the calyx, caducous.

LUPINUS DANAUS: herbaceus, e caudice perenni cæspitosus, pumilus, strigoso-hirsutulus ; stipulis subulatis ; foliolis 4 - 5 oblanceolatis (lin. 2 - 4 longis); racemo oblongo (pollicari) densifloro; calycis minute bracteolati labio inferiore tridentato, superiore profunde bifido ; corolla albo-violacea, carina rectiuscula ciliata. — Mount Dana, alt. about 12,500 feet, Bolander. — This interesting little Lupine may be beld to bear the name either of the lofty peak it inhabits, or of the distinguished geologist and naturalist whom the mountain commemorates. It was very scantily collected, and is probably rare or out of reach. The slender and diffuse or ascending flowering stems are only 2 or 3 inches high, and 1 – 3-leaved below the middle. Bracts subulate, rather shorter than the calyx, twice the length of the pedicel. Corolla 3 lines long; the vexillum and wings apparently white and tinged with blue or violet, the keel deep violet. — This and the two preceding seem very distinct from all other North American species. Neither of them can well be L. minimus, Dougl., which I do not identify.

TRIFOLIUM BOLANDERI: T. repenti subsimile, multiceps e caudice incrassato, glaberrimum; caulibus adsurgentibus 1-2-floris; stipulis herbaceis; foliolis obovato-oblongis vix retusis ; pedunculis (spithamæis) folia longe superantibus ; floribus (cærulescentibus ?) arcte capitatis mox deflexis ; pedicellis etiam fructiferis brevissimis ; calycis dentibus subulatis tubo campanulato basi gibboso subæquilongis ; ovario dispermo. — Westfall's Meadows above the Yosemite Valley, at the elevation of 8,000 feet, Bolander.

TRIFOLIUM BARBIGERUM (Torr. Bot. Whippl. Exped.), var. AnDREWSII: multo majus, subpedale, villosum ; foliolis majoribus subpollicaribus ; involucro explanato quandoque fere pollicem lato (corollis atropurpureis). — Collected by the late Dr. Andrews in 1856; but now Mr. Bolander sends it from Mendocino City (4781), with heads &c. fully as large as those of the related T. cyathiferum, and also, from drier and sandy soil (4755), in a form like the original of Bigelow and Fitch, but less depauperate.

DALEA DIVARICATA, Benth. Bot. Voy. Sulph., var. CINEREA : pube minuta præsertim calycis albescens; pedunculis haud divaricatis bi – tripollicaribus ; spicis virgatis laxe 25 – 40-floris; calycis dentibus ovato-oblongis, infimo paullo longiore. — Fort Mohave, on gravelly hills, Dr. J. G. Cooper. “Stems two or three feet high: flowers dark purple.” Except for the minute hoary pubescence and other minor particulars, this would seem to be Bentham's D. divaricata, from the coast of Lower California (and a comparison of specimens made at Kew discloses no specific differences). There is nothing divaricate in the specimens, however.

PETALOSTEMON FOLIOSUs: undique glaber; caulibus crebre foliosis ; foliolis 8-14- (sæpius 12-) jugis lineari-oblongis mucrone cuspidatis, glandulis paucis parvis ; spica cylindrica brevi-pedunculata ; bracteis aristatis e basi lanceolata ; calycis dentibus subæqualibus tubo cylindraceo dimidio brevioribus ; foribus roseo-purpureis. — Banks of Fox River, Kane Co., Illinois, Burgess Truesdell, 1867. Also near Nashville, Tennessee, Mr. Hatch, 1854. A well-marked species, which has been singularly overlooked, or else is very local. It bas the habit of P. villosus, but with yet more numerous leaflets, and is glabrous throughout, even to the ovary. The very numerous and equable leaflets, thicker spikes with more exserted bracts, shorter calyx

teeth, &c., no less than the color of the flowers, distinguish it at once · from P. candidus. Both ovules are apt to be fertile in this and the last-named species.

ASTRAGALUS MALACUS: undique molliter villosus ; caulibus e caudice perenni gracili erectis 2 – 3-foliatis (spithamæis vel pedalibus); foliolis 6-7-jugis obovatis retusis; pedunculis folia superantibus spicam multifloram demum laxifloram gerentibus; calycis tubo cylindrico dentibus setaceo-subulatis triplo longioribus ; corolla læte purpurea ; legumine oblongo-lanceolato arcuato haud stipitato crebre mollissime villoso tenuiter coriaceo subcompresso sutura dorsali (extus leviter sulcata) usque ad ventralem acute marginatam intrusa bilocellato polyspermo (sectione transversa auguste obcordata). - Nevada, near Carson City, Dr. C. L. Anderson. I formerly confounded an imperfect specimen of this with A. Parryi, Gray; and I know of no other more nearly related to it. But it is more softly villous, and usually more caulescent, has far longer peduncles, and spikes of bright purple or violet flowers, in a raceme which at length elongates, often to the length of 4 inches, the tube of the calyx is longer and narrower (flower over half an inch long); and the very villous legumes are thinner, little over an inch in length, and when apparently mature not at all obcompressed but somewhat flattened laterally, with the acute ventral suture salient, completely bilocellate.

ASTRAGALUS ARTHU-Schottii, Gray, Rev. Astr., char. fruct. emend. : spithamæus ad tripedalem ; legumine maturo ovato acuminato (lin. 7-8 longo) canescente chartaceo ad suturam ventralem profundius sulcato ob septum dorsalem completum bilocellato. — In sand on the Mohave River, at Camp Cady and elsewhere, Dr. J. G. Cooper.

ASTRAGALUS BOLANDERI: subpedalis, cinereo-puberulus; stipulis brevibus scariosis adversus petiolum connatis; foliolis 6-9-jugis sublinearibus oblongisque ; pedunculis folio brevioribus capitato-plurifloris ; pedicellis brevissimis, fructiferis reflexis; legumine in stipitem e calyce exsertum hamato-incurvo ovato acutato obcompresso turgido coriaceo glabro (lin. 8 - 9 longo 3 – 4 lato) polyspermo ob septum completum bilocellato. — Dry ground, at Ostrander's Ranch, Yosemite Valley, Bolander. Flowers not seen. The teeth of the calyx are almost setaceous, and more than half the length of the cylindraceous tube. Stipe 4 lines long. The species is to be ranked, perhaps, with the Oroboidei, although the stipules are connate and the legume completely two-celled.

LATHYRUS TORREYI: pusillus (spithamæus ad pedalem), villosopubescens ; radice perenni; stipulis semisagittatis angustis; foliolis . 4-6-jugis ovalibus mucronatis (lin. 4-8-longis); cirrho simplici sæpius brevissimo; pedunculo brevi vel brevissimo sæpius unifloro; calycis lobis setaceo-subulatis tubo duplo longioribus ; corolla purpurascente; legumine pauci-ovulato monospermo in pedicellum deflexo. L.? villosus, Torr. in Stevens (Cooper & Suckley) Pacif. R. R. Rep.; a preoccupied name. – Mendocino or south part of Humboldt Co., Bolander. A neat and peculiar little species, very different from any other, at least in North America, in slenderness, in the small size of the leaflets, and the single-flowered peduncles. The latter are sometimes scarcely longer than the stipules, and seldom half the length of the leaf. Bolander's specimens are past the flowering state ; the young legume minutely pubescent, semi-oblong, flat, apparently maturing only a single seed.

PRUNUS (AMYGDALUS) ANDERSONII: glaberrima ; ramis spinescentibus ; foliis fasciculatis parvis (lin. 4 - 9 longis) spathulatis oblongisve obtusis tenuiter subnervoso-venosis subserrulatis eglandulosis ; floribus longiuscule pedicellatis ; calycis (ebracteolati) lobis integer

VOL. VII.

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rimis tubo turbinato brevioribus; petalis læte roseis ; ovario cum styli basi hirsutissimo; drupa sicca subglobosa pubera. — Foot-hills of the eastern side of the Sierra Nevada, near Carson : A. March, Dr. C. L. Anderson. [Also collected by Dr. Torrey.] “About 3 feet high.” Flowers showy; the petals apparently of nearly the color of peachblossoms, 4 lines long, entire. Lobes of the calyx broadly triangular and obtuse, at length oblong. Stamens as long as the petals, 25, triseriate, but approximate. Drupe half an inch long.

HORKELIA BOLAnderí: humilis, cæspitosa ? vel humifusa e caudice lignescente ; foliis pube molli densa villoso-incanis ; foliolis 13 - 21 cuneatis palmatifidis, lobis 3 - 5 ovatis oblongisve ; stipulis angustolinearibus integerrimis ; cyma parva densiflora ; calycis alte 5-fidi segmentis accessoriis oblongis quam vera latiora subdimidio brevioribus; petalis obovatis vix unguiculatis; filamentis lanceolatis. — Dry alkaline soil, near Clear Lake, coll. January, 1863, Bolander. Only winter specimens known; the flowering stems rising 3 to 5 inches above the lignescent and tufted leafy base. This and the following are among those species which go far to justify the views of Bentham and Hooker, and now also of Engelmann, who would combine Horkelia and Ivesia with Potentilla. I am reluctant to adopt this conclusion, but have chosen a specific name which is not preoccupied in the latter great genus.

IVESIA TRIDENTATA (Horkelia tridentata, Torr. Bot. Whippl. t. 6): pube mollissima villosa ; caulibus patentibus vel erectis (pedalibus) gracilibus apice nudis ; foliis junioribus argenteo-sericeis, adultis subglabratis ; foliolis 5-11 subdissitis oblongo-cuneatis apice plerumque tridentatis ; stipulis pauci-laciniatis vel subintegris ; cymis pedunculatis confertifloris ; pedicellis evolutis florem adæquantibus; calycis campanulati segmentis accessoriis linearibus tubo æquilongis quam vera acutissima brevioribus ; petalis (albis) breviter unguiculatis ; staminibus 10; carpellis 5 – 10? — In the Sierra Nevada. The character is here drawn up from the very beautiful and complete specimens collected by Mr. Bolander, in 1866, in the region near Mount Dana. The stems are about a foot high and erect or nearly so. Leaflets of the earlier radical leaves inclining to obovate, of the stem-leaves (reduced to 1-3 pairs) verging to linear-cuneate : some of the upper stipules entire. The narrow filaments are adnate to the calyx-tube up to the sinuses and base of the lobes, and are thus distant from the (villous) receptacle, as in Horkelia and Ivesia generally, but not in

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