DESCRIPTIONS IN GRAY’S PLANTA WRIGHTIANA. 515 
7. G. GRACILE, n. sp.: caule erecto divaricato-ramoso cum petiolis et pedicellis retrorso-piloso ; merger basi 
Ba ciliatis calyce et stylis pilocis ima parte solum connatis brevioribus; valvis capsule pilosiusculis ; ro pu- 
ente. — Pine woods, on the mountains of Cosiquiriachi, State of Chihuahua ; collected in October, by Dr. "Wil 
nus. — Resembling the last ; but erect, more hirsute pubescent; the flowers, frui it, and seed smaller; stamens 
nee ; styles hairy, more duaply divided ; and the peduncles much shorter, mostly of the length of the pedicels. — 
Near G. Mexicanum, Kunth ? 
+ + Flores albidi. 
8. G. Hernanpeztt, DC.: caule divaricato-ramoso cum petiolis patentim piloso; pedicellis glanduloso-pilosis; 
filamentis basi breviter ciliatis calycem et stylos pilosos ad medium connatos equantibus ; valvis capsule parce pilosi- 
usculis; rostro glanduloso-piloso: — Pine woods, on the mountains of Llanos, State of Chihuahua; collected in 
October, by Dr. Wislizenus. Leaves 1} to 2 inches in diameter, the Bria truncate at the base ; peduncles as long as, 
or shorter than, the pedicels; flowers white, about 8 lines in diamet 
80. CALLIANDRA ? HERBACEA, Engelm. : caule humili erecto flexuoso adpresse piloso; stipulis serena [39] 
nervosis ; foliis longe petiolatis ; pinnis 3—4-jugis ; foliolis 20-30 obliquis oblongis obtusiusculis ciliati 
glabris subtai laxe reticulatis adpresse pilosis ; capitulis florum binis folio revioetbion; pauci- -(-10-)flotia; cede 
tubulosis 4—5-dentatis, dentibus tubo subbrevioribus ciliatis ; tubo corolle ea ia triplo longiore dentibus obtusiusculis 
apice parce pilosis ; staminibus 25-30 corollam longe superantibus. — Between San Miguel and Las Vegas ; flowering 
in August. — Plant apparently perennial, 6 inches high: leaves with lari 3 inches long: leaflets 3 lines long: heads 
about 1 inch in diameter, on peduncles of 1 inch in length. Flowers polygamous: a fertile flower which I examined 
had 4 calyx and 4 corolla teeth; a sterile one, 5 teeth: stamens united at the base, more so in the fertile flower. 
Ovary elongated, with many ovula and the tumid sutures glabrous. 
C. CHamaprys, Engelm.: fruticosa, humilis ; ramulis petiolisque brevibus eglandulosis pubescentibus ; foliis 
2-3-jugis rarius 1-jugis; foliolis 6-19-jugis minutis ovatis obtusis seu acutiusculis supra glabris subtus pilosis ; stipulis 
subulatis rigidis erectis subpersistentibus ; capitulis breviter pedunculatis singulis binisve pauci-(4-8-)floris; floribus 
hermaphroditis; calyce campanulato subinequaliter 5-dentato, dentibus obtusis pilosis; corolla t tubuloso-campanu ta 
calycem ter quaterve superante ad medium 5-fida extus parve pilo sa (purpurea), lobis lanceolatis acutis subequalibus; 
staminibus polyadelphis basi in tubum connatis elongatis tenuissimis circiter 35; ovario lineari-lanceolato suturis 
incrassato glaberrimo ; stylo tenuissimo capillaceo stamina superante; ciate capitato; legumine lineari-lanceolato 
stipitato acuminato (immaturo) albo-sericeo marginibus valde incrassatis subnudo.— Chihuahua, Dr. Wislizenus, Dr. 
Gregg ; flowering in April. — Stems squarrose, much branched, 3 to 12 inches high, stout. Leaves 4 to 8 lines long : 
leaflets ? to 1 line long. Peduncles 3 to 4 or 5 lines long. Stamens an inch long. Legume 14 to 2 inches long, 
4 inch wide, white silky, while the ovary is perfectly glabrous !—The specimens of Dr. Wislizenus, from Bachimba, 
are smaller, more branched ; the leaflets smaller, obtuse, more hairy, and not more than bijugate, the lebes of the 
corolla recurved. Dr. Gregg collected in the Caiion of Ojito larger specimens, with often acutish leaflets, and larger 
flowers, with the lobes of the corolla erect.— Apparently near C. Californica and C. Xalapensis, Benth., but well 
distinguished by the very small leaflets, &. 
IV. DESCRIPTIONS IN GRAY’S PLANTZ WRIGHTIAN4. 
From THE SMITHSONIAN CoNTRIBUTIONS TO KNowLEDGE, Vow. III. ARTICLE 5, 1852, anp Vou. V. 1853. 
Part I. 1852. 
30. Porrunaca REeTUsA, Engelm. Pl. Lindh. 2, p. 154, Valley of the Rio Grande below El epee in [13] 
sandy soil. The long style and the broadly winged sepals are decisive as to the identity of this species. 
seeds are of the same size and roughness as those of Lindheimer’s specimens, but opaque and black, not ae The 
only specimen before me is a small erect plant, without any flowers. [In Mr. Wright’s notes the flowers are said to 
be | _ yellow | and minute.”]— To the character of the Spathulate in Pl. Lindh. 1. c. add: Operculo capsule acuto sub 
icto semina unum plurave includente. I = overlooked this remarkable fact ; but it constantly occurs in 
all the species of this section, both European and American. 
31, 32. P. prtosa, Linn. W. Texas to New aaa I have before me specimens from six different localities, 
from the Brazos westward, collected by Lindheimer and Wright, differing from one another in the size and appearance 
of the seeds and in the shape of the capsule; but these differences vary so much that even varieties can hardly be 
characterized. In some the capsule is small with a long stipe, the operculum conic, the seeds very minute, and more 
or less shining with metallic lustre. In others the capsule is more than twice as large, the operculum semiglobose, the 
stipe very short, and the much larger seeds black and opaque. 
