62. COREOCARPUS HETEROCARPUS (sp. nov.): annua; foliis membranaceis punctatis bipinnatifidis, segmentis brevibus hinc inde dentatis; acheniis exterioribus obovatis ala pinnatisecta cinctis, interioribus longioribus clavatis plerumque exalatis nunc tuberculosis exasperatis, omnibus calvis. — Herba gracilis, pedalis, capitulis corymbosis, involucro 2 lin. longo, ligulis 2-4, lineas 3 longis.—I am confident that Bentham's Coreocarpus parthenioides, and his Acoma dissecta, along with the present plant, belong to one genus, for which, from its analogy to Coreopsis, the name of Coreocarpus may be preferred. Its nearest relationship is with Leptosyne on one hand, and, still more, with Chrysanthellum and Heterospermum on the other. In the next complete revision of the Bidentoid or Coreopsoid genera with fertile rays, I expect to see all these four and some others reduced to one (Heterospermum), which will be the analogue of Coreopsis, and about equally polymorphous in the achenia, &c. Although the Coreocarpus (Acoma) dissecta is described as a "suffrutex," with linear entire lobes to the leaves, and the achenium with a narrow entire wing, yet I am not sure that it is really distinct from the present plant. The indurated stems and roots of some annuals of a dry region are not rarely described as fruticose; and the achenia of Bentham's plant, I suspect, were far from mature. Yet our specimens are those of a tender and slender annual, and even the ovaries show the rudiments of the lobed wing, which at maturity is dissected in the manner of most Coreopsides of the section" Coreoloma, only more coarsely. The inner disk-achenia are longer and much narrower than the rest, are more or less roughened or tuberculate, and mostly quite wingless. The disk-corollas show a bearded ring at the summit of the proper tube. This Bentham describes, but the artist has neglected to delineate, in his C. parthenioides; on the other hand, the artist delineates the same thing in the Acoma dissecta, while it is not noticed in the description. Of the latter plant, also, the appendages of the style are described as "vix puberula," while the artist makes them hairy. In our plant these appendages are elongated linear-subulate and minutely hispid.

63. HETEROSPERMUM XANTI (sp. nov.): tenue, glabrum; foliorum segmentis paucis angustissime linearibus integerrimis; pedunculis filiformibus; involucri exterioris squamis haud ciliatis interiores vix æquantibus; ligulis 7-8 elongatis; acheniis radii calvis ala lobata, disci linearibus longiuscule biaristatis. Only a single specimen was collected, of a slender annual, 6 or 7 inches high, hardly sufficient for

description, but interesting from the resemblance of the marginal achenia to those of the foregoing plant in the wing, as far as can be judged from the immature state. The disk-achenia, and indeed the whole structure, except the fertile achenia, accord with Bidens.

64. POROPHYLLUM GRACILE, Benth. Bot. Voy. Sulph. p. 29. The specimens accord with Bentham's description, except that the involucres are five or six (instead of four) lines in length. Into this my P. Greggii appears to pass, with involucres from six to eight lines in length, and with mostly rostrate achenia.

65. DYSODIA SPECIOSA (sp. nov.): fruticosa, glabra, valde ramosa; ramis apice nudis monocephalis; foliis oppositis trisectis, segmentis petiolulatis rotundatis argute inciso-dentatis vel trifidis lobis incisis dentatisve, dentibus nonnullis glandula grossa infraterminali instructis; involucro bracteis subulato-setaceis grosse uniglandulosis cincto, squamis linearibus subulato-acuminatis, ligulis involucrum longe superantibus; acheniis glaberrimis. — Frutex vel suffrutex ut videter ultra-bipedalis, ramis patentibus, ramulis floridis herbaceis gracilibus in pedunculum 1-3-pollicarem sub capitulo leviter incrassatum desinentibus. Foliola 4-6 lin. longa, membranacea, nunc rigidula, glabra vel tenuissime puberula, aut rotundata grosse inciso-dentata, aut 3-5-fida lobis argute incisis. Petioli et petioluli interdum lobulis dentibusve parvis 1-2 instructi. Capitulum fere pollicare. Bractea tenues, aristatæ, involucrum dimidio breviores. Involucri squamæ 17-20, rigidæ, sub acumine setaceo grosse uniglandulosæ, inferne glandulis 2-4 juxtamarginalibus elongatis sæpe notatæ. Ligula 14-16, conspicuæ, aurantiaceæ, oblongæ, semipollicares. Receptaculum breviter hirsutum. Pappus albus, 10-paleolatus, paleolis lato-linearibus 7-9-setosis. A striking species, helping to connect Clomenocoma with Dysodia. But the involucre is as uniserial as in other Dysodiæ. So it also is in D. montana (Clomenocoma montana, Benth. Pl. Hartw. p. 86, 351), which Bentham is disposed to refer to D. grandiflora of De Candolle. It is, I think, distinct from, though strictly congeneric with, that species.

66. GNAPHALIUM LEUCOCEPHALUM, Gray, Pl. Wright, 2, p. 99. 67. MALACOTHRIX PARVIFLORA, Benth. Pl. Hartw. p. 321?

68. MACREIGHTIA INTRICATA (sp. nov.): tenuiter sericeo-puberula, mox glabra; foliis coriaceis cuneato-oblongis retusis leviter triplinerviis parvis (6-12 lin. longis). Intricato-ramosus, ramulis rigidis. Pedunculi fructiferi 3 lin. longi, solitarii. Bacca globosa, magnitudine pruni, calyce crasso-coriacco trilobo stipata, 6-sperma. The flowers

are unknown; but the plant must be a Macreightia, and the most northern species of the genus.

69. DICLIPTERA RESUPINATA, Juss.; Nees. in DC. Prodr. 11, p. 474; Torr. Bot. Mex. Bound. p. 125.

70. SERICOGRAPHIS CALIFORNICA, Gray in Torr. Bot. Mex. Bound. Surv. p. 125. Beloperone Californica, Benth. Bot. Voy. Sulph. p. 38. This is very variable in the foliage and pubescence; the leaves on some specimens less than an inch, on others over two inches long; the inflorescence, calyx, &c. sometimes cinereous-puberulent, sometimes conspicuously glandular-pubescent. The corolla is minutely puberulent or glandular. The pedicels vary from one to three lines in length. Sterile base of the capsule twice the length of the seed-bearing portion. Seeds turgid-lenticular, with a very smooth testa.

:

71. HYPTIS LANIFLORA, Benth. Bot. Sulph. p. 42, t. 20. The figure does not represent the wool of the calyxes and pedicels half dense enough it forms a wide white nimbus, more than thrice the breadth of the enclosed flower, the hairs of which, moreover, are beautifully and dendritically branched. - Hyptis Emoryi, Torr., from the interior Californian desert, on the upper Colorado, is an allied species, but with furfuraceous-canescent and barely serrulate leaves, and the branched wool of the calyxes also short and furfuraceous.

72. HYPTIS TEPHRODES (sp. nov.): herbacea? erecta, pube brevissima molli undique canescens; foliis lanceolatis acutis obtuse serrulatis in petiolum brevem attenuatis, floralibus subulatis parvis; verticillastris plurifloris laxis approximatis in racemos vel spicas crebriores paniculatas confluentibus; bracteis minutis setaceis; calycibus cum pedicello subæquilongo lana brevi nivea dense vestitis, tubo æquali oblongo-campanulato dentibus setaceis æqualibus; corolla vix calyce longiore. Folia utrinque tomento appressisimo albido mollia, obsolete venosa, caulina 2-pollicaria, 4-6 lin. lata; ramealia decrescentia linearia. Paniculæ floribundæ, aphylla. Calycis fructiferi tubo vix sesquilineam longo. A well-marked species of this great genus, of the same section with H. albida, to which it is considerably related. In both the pubescence of the calyx is dendritic.

73. TOURNEFORTIA VELUTINA, H. B. K. Nov. Gen. & Sp. 3, p. 79, t. 201.

74. HELIOTROPIUM CURASSAVICUM, Linn.

75. ERITRICHIUM (RUTIDOCaryum) HELIOTROPIOIDES, Torr. Bot. Mex. Bound. Surv. p. 140. Antiphytum helitropioides, A. DC. Prodr. 10, p. 122.

76. ERITRICHIUM ANGUSTIFOLIUM, Torr. in Pacif. R. R. Rep. 5, p. 363. Accords with no. 500 of Coulter's Californian collection, which is referred to this species by Dr. Torrey. No. 85 of a former collection of Xantus, made in the State of California, is a different species, near to or a variety of E. crassisepalum, Torr.

77. BUDDLEIA CROTONOIDES (sp. nov.): tomento albido denso; foliis e basi subcordata ovato-oblongis seu ovato-lanceolatis sensim acuminatis vel acutatis creberrime crenulatis, venis subtus prominulis reticulatis; ramis teretibus; panicula densa pyramidata; capitulis floribusque tomentosis sessilibus; corolla calycem vix superante. Frutex. Folia 3-4-pollicaria, dense ac molliter tomentosa, tomento albo in costa venisque mox fulvello, venulis subtus conspicuis versus margines læte reticulatis. Corolla sicut calyces extus dense tomentosæ. · Related to B. Humboldtiana and B. cordata, but distinct in the woolliness, the terete branches, &c. The tomentum probably falls with age from the upper face of the leaves.

78. EUSTOMA EXALTATUM, Griseb. in DC. Prodr. 9, p. 51.

79. QUAMOCLIT COCCINEA, Moench.

80. IPOMEA (PHARBITIS) NIL, Roth.

81. IPOMEA SINUATA, Ort. A form with the divisions of the leaves nearly entire.

82. JACQUEMONTIA ABUTILOIDES, Benth. Bot. Voy. Sulph. p. 83. EVOLVULUS ALSINOIDES, Linn.

34.

84. SOLANUM ELEAGNIFOLIUM, Cav. Ic. t. 243; Dunal in DC. Prodr. 13, p. 290. S. Hindsianum, Benth. 1. c.

85. PHYSALIS GLABRA, Benth. Bot. Voy. Sulph. p. 39. But the leaves are not thickish.

86. DATURA DISCOLOR, Bernh.; DC. Prodr. 13, p. 541. D. Thomasii, Torr. in Pacif. R. R. Rep. 5, p. 362, & Bot. in Mex. Bound. Surv. p. 155. Stramonia Curassavica, &c., Herm. Par. Bot. p. 233, cum ic. Cinereo-pubescens. Corolla quam D. Stramonii longior. Capsula mox nutans, aculeis gracilibus æqualibus pubescentibus ultrapollicaribus horrida.—I have little doubt that this is the West Indian D. discolor, although the name is not appropriate to it. The plant of Professor Thurber from Corralitas, mentioned by Dr. Torrey, is, I suppose, D. quercifolia, H. B. K., which has also been collected by C. Wright (no. 527) and others, on the Rio Grande in New Mexico. This bears an erect fruit, the spines of which are unequal (the larger an inch or more in length), compressed, and with dilated bases, glabrous or nearly so.

87. NICOTIANA MEXICANA, Schlecht. in Linnæa, 15, litt. p. 95? Belongs to the section Tabacum; perhaps the same as N. caudata, Nutt. Pl. Gamb.

88. NICOTIANA IPOMOPSIFLORA, Dunal. (Moç. and Sesse. Ic. Mex.) in DC. Prodr. 13, p. 559.. N. Tabacam, var.?? Benth. Pl. Hartw. no. 205. N. trigonophylla, Dunal. in DC. 1. c. p. 562. "N. multiflora, Nutt. Pl. Gamb.?" (sed ubi?) Torr. in Pacif. R. R. Rep. 5, p. 362? A common North Mexican species extending into the United States, rather variable, but well marked. When fully developed the fruiting racemes are long, virgate, and unilateral, and the corolla (6 or 8 lines long) is white or greenish-white, or yellowish, with a small fiveangled border. The whole plant is viscid. It is no. 579 of Coulter's -Californian, and 1255 of his Mexican collection. It occurs in Wright's first Texan-New-Mexican collection without a number (unless the number is lost from my set), in his later collection it is no. 1607...Wright also collected it in Texas as early as the year 1848; also Lindheimer, in his coll. 1850 (300), N. rupicola, Lindh, mscr."; Dr. Gregg in Mexico (no. 61, and without a number); Thurber in Sonora (no. 987); and Dr. Bigelow in the interior of California. I believe it is also Berlandier's no. 1361, from San Louis Potosi; but the specimens (in fruit) are too poor to determine. No. 75 of Xantus's Fort Tejon collection is of a different but allied species, perhaps N. sordida, Lehm. I cannot find any " N. multiflora" in Nuttall's paper on Gam.bell's collection.

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89. LYCIUM BREVIPES, Benth. Bot. Voy. Sulph. p. 40; Miers, Ill. S. Amer. Pl. 2, p. 117, t. 69.

90. VALLESIA DICHOTOMA, Ruiz & Pav. ex Benth. Bot. Voy. Sulph. p. 33. Leaves lanceolate-oblong, even the nascent ones glabrous.

91. ASCLEPIAS SUBULATA, Decaisne?; Torr. in Pacif. R. R. Rep. 5, p. 362, t. 7, & Bot. Mex. Bound. p. 164.

92. BÖERHAAVIA ERECTA, Linn. A slender form, not uncommon in Sonora, Western Texas, &c.

93. BÖERHAAVIA SPICATA, Chois.?; Torr. in Bot. Mex. Bound. p. 171. This is most allied to B. Wrightii. The lowest leaves are ovate or oblong and obtuse, but the upper ones narrower and cuspidate-acute, often attenuate-acuminate, the margins mostly very undulate, the surfaces brown-dotted. Nothing is more variable than the size of the perianth in this genus. Instead of being small, as in the specimens