BOTANY. 189 
Flor. Abyssin. Western Texas, San Pedro; Wright, No. 1841. On the Cimaron; Fendler, 
No. 794. Eagle Springs; Bigelow. 
EUPHORBIA ACUTA (nov. spec.): perennis, multicaulis, erecta, foliosa, hirsuta; foliis e basi 
obtusa subaequali lanceolatis acutatis cartilagineo-mucronatis supra nudis ; stipulis filiformibus 
mox deciduis ; anthodiis versus caulis apicem alaribus s. pseudoaxillaribus sparsis; involucris 
hemisphaericis appendicibus truncatis crenatis lobatisve; stylis patulis ultra medium bilobis, 
ovario cano longioribus capsula cana; seminibus subcubicis acutis acute angulatis levibus. 
Stony prairies western Texas, along the San Pedro and Pecos rivers, &c.; Bigelow, Schott. (No. 
1739 and 1749, Wright.) Stems 1-1 foot high; stiff rigid, leaves 6-10 lines long, 3-6 
lines wide, well characterized by the very acute point ; seeds 1 line long. 
EUPHORBIA ANGUSTA (nov. spec.) : perennis, erecta, elatior, rigida ; foliis lanceolato-linearibus 
basi acuta subeequalibus acutis integris demum glabratis; stipulis subulatis minutis deciduis ; 
anthodiis pseudoaxillaribus sparsis ; appendicibus truncatis crenatis sæpe bilobis erectis; stylis 
brevibus erectis apice bilobis; capsula cana acutangula; seminibus ovato-cubicis acutangulis 
transverse rugosis foveolatis. In rocky places western Texas; Lindheimer, No. 694; Wright, 
No. 1828. On the Rio Grande; Schott. Erect, 6-15 inches high ; several stems form a large 
black perennial root with few or numerous elongated branches; leaves few, 6-15 lines long, 
1-2 lines wide. Seeds 0.8 line long, strongly marked. 
EUPHORBIA FLORIDA (nov. spec.): annua, erecta, patulo-ramosa, glaberrima ; foliis lanceolato- 
linearibus seu linearibus in petiolis attenuatis serrulatis mucronatis ; stipulis lineari-subulatis 
seepe 2-3-8418: involucris alaribus in cymulas terminales laxas congestis; pedunculis petiolum 
longe superantibus ; lobis involucri ovatis acutis seu acuminatis ciliatis seu rarius laceris ; ap- 
pendicibus magnis (involucro ipso majoribus) orbiculatis seu ovatis petaloideis integris; stylis 
ovarium equantibus seu superantibus basi coalitis ad medium seu ultra bifidis; stigmatibus 
filiformibus ; capsula obtuse angulata ; seminibus subcubicis acute angulatis laevibus transverse 
2-costatis. Sonora; Wright, (No. 1829,) Thurber, Schott. Stem 4-1 foot high; leaves 12-18 
lines long, 1-13 line broad ; margin revolute, and serratures thereby often invisible. Involucre 
with large bright white appendages, 3 lines in diameter. 
EUPHORBIA TRACHYSPERMA (nov. spec.): annua, erecta, glaberrima ; foliis e basi subaequali 
obtusa seu angustata oblongo-lanceolatis serratis mucronatis ; stipulis filiformibus seu subulatis 
setaceo-fissis ; anthodiis alaribus demum in cymulas paucifloras terminales s. laterales confertis ; 
appendicibus angustis albis ; stylis ultra medium bifidis; capsula obtusangula; seminibus sub- 
cubicis faciebus leviusculis, angulis acutis crenatis asperatis. San Pedro; Sonora, Wright, 
No. 1832. Slender, erect, about 1 foot high, branches erect, few ; leaves 9-12 lines long, 2-3 
lines broad ; seed 1 line long. 
EUPHORBIA EXSTIPULATA (nov. spec.): annua, dedii piti, ramosa, glabriuscula seu minute 
sparsimque aspera; foliis lanceolatis seu lanceolato-linearibus argute serratis basi æquali in 
petiolem brevem angustatis ; stipulis subnullis s. glanduliformibus; anthodiis alaribus solitariis ; 
peduneulis petiolo brevioribus ; appendicibus anticis plerumque 2-lobatis, posticis majoribus 4- 
lobatis; stylis ovarium ad angulos scabrum equantibus, profunde bipartitis ; stigmatibus 
еннай seminibus magnis subcubicis verrucosis et transverse 2-3-costatis. Western 
Texas; Wright, (1833 and 1838.) New Mexico; Fendler, (No. 790.) Sonora; Thurber, Bigelow, 
Parry. Stem about 6 inches high; leaves about 1 inch long, 1-2 rarely 3 lines wide, some- 
times not absolutely opposite, but a little separate; seed 1 line long, with thick cross-ribs. A 
form to the next sections. . 
