BOTANY. 159 
АмвохтА ТаАВЕКХЖМОХТАХА, Walt. Fl. Car. р. 98; Decaisne іп DC. Prodr. 8, p. 385. А 
ciliata, Walt. l. c.; Decaisne, l. с. A. latifolia, Michx. Fl. 1, p. 121. А. angustifolia, Micha. 
l.c. А. salicifolia, Pursh, Fl. 1, p. 184. A. tristis, J. E. Smith in Rees’ Cycl. Hills near 
the Blanco river, Texas; Wright. A nearly glabrous variety. 
AMSONIA LONGIFLORA (n. sp.): glabra ; caule erecto e basi lignoso ramosissimo ; foliis lineari- 
lanceolatis vel linearibus ; corollae tubo gracili elongato (13 unc. longo) superne subventricoso ; 
sepalis lanceolato-subulatis. Rocky ravines near El Paso, April—May. (No. 1668, Wright.) 
Plant 1-2 feet high. Leaves 14-2 inches long, and from less than a line to 24 lines wide. 
Corolla blue; lobes of the limb about one-fourth the length of the tube. Pods as in the two 
preceding species. No. 1671 Wright is a variety with very narrow leaves, which are scabrous 
with short hairs on the margin. 
HAPLOPHYTON CIMICIDUM, Decaisne in DC. Prodr. 8, p. 412? In crevices of rocks, Magdalena, 
Sonora; Thurber, Schott. (No. 1666, Wright.) Stems several from a woody base, 1-2 feet 
high, minutely pubescent. Leaves 1-14 inch long, and 21-4 lines wide, opposite or alternate, 
scabrous with short rigid hairs, which stand on a swollen crustaceous base. Flowers terminal 
solitary or 2-3 in a cymule. Calyx $ {ће length of the corolla-tube; no traces of glands. Corolla 
sulphur- yellow, somewhat salverform ; the tube shorter than the obovate lobes. Stamens united 
about middle of the tube of the corolla ; anthers oblong, rather acute, rather longer than the 
free portion of the filaments. Ovaries oblong, distinct, each 7-8-ovuled; style rather stout. 
Stigma oblong-capitate, entire. Pods 2 inches long, very slender, tapering to along narrow 
point. Seeds oblong-linear, the testa wrinkled, each extremity furnished with a coma of white 
hairs, which are longer than the body of theseed. "This genus was founded on a Mexican plant ; 
and part of the character, especially what relates to the seed, is drawn from an unpublished figure 
of Mocino and Sesse. Notwithstanding the seed is said to be hairy only at the upper extremity, 
I strongly suspect that the coma of the lower end had become detached, as it is very deciduous. 
Our plant agrees in every respect with H. cimicidum, except that the latter is said to have leaves 
2-21 inches long and 8-10 lines wide. 
ASCLEPIADACE. 
METASTELMA BARBIGERUM, Scheele in Linnea, 21, р. 760. Hill sides and thickets, borders of 
the Rio Grande, from New Mexico to Eagle Pass, June—September. Near Monterey, Neuvo 
Leon, Dr. Edwards. (No. 549 and 1676, Wright. No. 2@72 and 3198, Berlandier.) Dr. 
Gregg collected it in Neuvo Leon, west of Cerralbo. We have what appears to be M. Schlecht- >. 
endalii, Dne, collected in Key West, Florida, by the late Mr. Blodgett. 
METASTELMA? ANGUSTIFOLIA (n. sp.): glabrata; caule prostrato vix volubili ; foliis anguste- 
linearibus acutis basi in petiolem brevem attenuatis; floribus plerumque solitariis axillaribus 
oppositis breve pedicellatis; corolle laciniis lineari-lanceolatis acutissimis apice reeurvis in- 
trorsum infra medium retrorsim pilosis; coronz stam. foliolis oblongo-spathulatis erectis integris 
gynostegio constricto subeequalibus ; stigmate longe rostrato.—Sides of ravines, Santa Cruz, 
Sonora; Wright, No. 1677. Stem 1-3 feet long, slender, with a somewhat ligneous base. 
Leaves 1-13 inch long and one line wide. Flowers purplish, 2 lines long, on pedicels of the 
same length. Calyx deeply 5-parted, the segments narrowly lanceolate. Corolla subcampanu- 
late, the long segments recurved above the middle. Horny margins of the anthers angularly 
projecting ; the membranaceous summit elongated, erect, oblong. Stigma with a cylindrical 
