224 Engelmann and Gray, 
corolla, which are rarely somewhat nerved ; stigmata also pur- 
ple, and anthers purple or yellow. — ( Engel.) 
195. C. cuspipata (Engel. n. sp.) : caule filiformi ramosis- 
simo ; floribus pedunculatis in cymas laxas bracteosas disposi- 
tis 5-fidis; tubo corolle cylindrico sepala usque ad basin 
libera: SA concava (exteriora cuspidata) et lacinias limbi 
S ovatas acutiusculas. uninervias erectas s. patentes superante ; 
staminibus limbo brevioribus ; squamis ovatis fimbriatis tubum 
sub:quantibus ; stylis filiformibus ovario (minuto) globoso 
pluries longioribus ; capsula globosa corolla marcescente ob- 
tecta. —Var. e. pratensis; floribus minoribus ; calyce bracteis 
paucis involuerato ; tubo corolle subcylindrico calycis et co- 
rolle segmentibus paulo longiore ; staminibus limbi laciniis ova- 
tis acutiusculis duplo brevioribus ; stylis ovarium parvum duplo 
superantibus. — Dry prairies west of the Brazos, on Tephrosia, 
Bradburia, Ambrosia, &c. June. — Var. g. nvwrpa : floribus 
majoribus ; calyce bracteis pluribus involucrato ; tubo corolla 
infandibuliformi calycis et corollee segmenta duplo superante ; 
staminibus laciniis limbi lanceolatis acutis paulo brevioribus ; 
stylis ovarium minutum quater superantibus. Bottom lands 
of tlie Colorado, on Iva ciliata, Ambrosia trifida, &c. August 
1844, (No. 276, infra.) — A remarkable species. The stems 
are very much branched, filiform ; inflorescence loose panicu- 
late, pedicels with many epulae bracts, some of them sur- 
rounding the calyx like.an involucrum, similar in shape but 
smaller than the sepals; sepals somewhat lacerate or crenu- 
te, ovate, carinate, (the carina less distinct in. the var. B) : 
cuspidate, interior ones rather obtuse, all concave, poa ^ 
bricated. Lobes of corolla thin membranaceous, with a 
middle nerve, formed by large ‘oblong: or linear cells ; when 
dry, convolute; the exterior ones generally somewhat cuspi- 
date, thei interior ones obtuse ; at the base the lobes are dilated 
and cover one another, more than in any other North Ameri- 
can species. Styles remarkably slender and and long, about the 
en th of the stameñs, but elongated afier flowering, when the 
corolla assumes an urceolate shape, and finally « covers like 2 
