PHYTOLACCACER. 
Puyronacca pecanpra, Linn. Near Fort Washita; April. 
POLYGONACEZ. 
Po.yconum LapatutroLuM, Linn.? Willd. Sp. pl. 2, p. 442. Near Fort Washita. Perhaps 
not distinct from P. Persicaria. 
Errogonum tonerrouium, Nutt. in Trans. Amer. Phil. Soc. (n. ser.) 5, p. 164. EH. Texanum, 
Scheele. Gravelly soil, on the Pecos; April. 
Errogontum curnuum, Nutt. in Pl. Gambel.? Llano Estacado, sandy soil. It differs in the 
pubescence of the leaves being rougher and more persistent. 
Rumex venosus, Pursh, Fl. supp. 2, p. 733. Delaware creek, and along the Pecos; March. 
Rumex Aceroseta, Linn.; Pursh, Fl. 1, p. 249. Western Texas. Probably introduced. 
Rumex Britannica, Linn.; Torr. Fl. New York, 2, p. 155. Western Texas. 
NYCTAGINACE. 
Apronta cycLoprera, Gray, in Sill. Jour. (n. ser.) 15; Torr. in Marcy’s Rep. t. 18. Llano 
Estacado to Fort Chadbourne; April, May. In flower only. 
OxyBAPHUs ANGUSTIFOLIUS, Torr. in Amer. Lyc. New York, 2, p. 237. On the upper Colorado; 
April. 
Oxypapuus Hirsutus, Sweet ; Hook. Fl. Bor.-Am. 2, p. 124. On the Colorado; April. 
ActeIsaAntHEs BerLAnprert, Gray, in Sill. Jour. l.c. On the Pecos; March, Foliage only. 
UPHORBIACE. 
Traaia RAMosA, Torr. in Ann. Lyc. New York, 2, p. 245. Gravelly soils ; March. 
€nrposcoLus stimuLosus, Lngelm. and Gray, Pl. Lindl., part 1, p. 26. Sand-hills of Llano 
Estacado and Western Texas; March to May. Flowers larger than in the eastern plant. 
STILLINGIA LANCEOLATA, Nutt. in Trans. Phil. Soc., (n. ser.) 5, p. 176. Sandy soil, Western 
Texas; April to May. . 
HENDECANDRA croToNomDES, Hook. and Arn. Bot. Beech, p. 388. This is the same as No. 
1800, Pl. Wright. It was found also by Frémont on the Gila. It is quite a distinct species 
from H. procumbens. The Mexicans call it Yerba del Gato, and use it as a purgative. 
Evpnorsia ArKAnsana, Engelm. and Gray, l. c. no. 303. Intermediate between E. platy- 
_ phylla and E, Helioscopia. Sandy soil. Collected in a journey to Fort Chadbourne, and on the 
head-waters of the Colorado. 
EvpnorsraA Guyer, Engelm. and Gray, Pl. Lindh. 1, p. 52. Western Texas; Mays 
EvpHorstA WRriGHTH, (n. sp.): stem herbaceous from a somewhat ligneous base, € , much 
branched; leaves opposite, sessile, narrowly lanceolate-linear, entire; involucres 80 itary, pe- 
dunculate, mostly terminal or in the uppermost forks of the stem, pubescent; glands trans- 
versely oblong, entire, with a large petaloid broadly obovate denticulate appendage; capsule 
very minutely papillose-pubescent ; seeds glabrous. Head-waters of the Colorado; April. This 
is the same as No. 1827 of Mr. Wright’s New Mexican collection, (1851-52). Itis about a 
foot high, branching from the base; the branches green and angular. Leaves an inch or more 
in length, and 2-3 lines wide. Peduncles variable in length, occasionally 2-3 times longer than 
the hemispherical involucre, but usually shorter. . Petaloid appendages conspicuous. Styles 
very short, spreading, 2-cleft about half-way down. Capsule coriaceous. Seeds subglobose. 
EUPHORBIA ALBOMARGINATA, (0. sp.): perennial, slender, much branched, smooth; leaves stipu- 
late, @posite, suborbicular, subcordate, entire, distinctly petiolate; involucre solitary, shorter 
