DIADELPH1A HEXANt>RlA, 
177 
vderneath. The common petioles scarcely an inch long. Stipules 2, 
small, subulate, at the base of the petioles. Flowers in heads forming 
terminal corymbs. Peduncles or small branches angled, roughened with 
small glands. Bractea , a scale around the base of each flower, nearly 
round, membranaceous, dotted, fringed, mucronate, sometimes with three 
approximate points, the 8 or 10 inferior bracteas generally without flow- 
ers, the lowest with their joints frequently dilated into leaves. Calyx 
deeply 5-parted, the segments linear, plumose* Petals white, upper one 
with a claw as long as the calyx and attached to its base, the 4 others al- 
ternating with their stamens. Germs ovate, very villous. Style as long 
as the stamens. Stigma simple, obtuse. Legumen small, included in the 
calyx. Seed 1 , oblong. 
Grows in dry sandy pine barrens. 
Flowers September — October. 
HEXANDRIA. 
DICLYTRA. Mocnck. 
Petala 4, 2 exterio- 
ra basi aequaliter cal- 
carata aut gibbosa. 
Siliqua bivalvis, poly- 
sperma. 
1. Formosa. 
D. calcaribus 2, 
subincurvis, obtusis ; 
scapo nudo, racemo 
subcomposito ; stig- 
mate biangulato. 
Petals 4, the 2 ex- 
terior either gibbous 
or bearing a spur at 
base. Pod 2-valved, 
many seeded. 
Spurs 2, slightly 
curved, obtuse ; scape 
naked ; raceme some- 
what compound ; stig- 
ma 2-angled. 
De Candolle Sys. Nat. 2. p. 109. 
Corydalis Formosa. Pursh 2. p. 462. Nutt. 2. p. 86. 
Root tuberous, perennial. Leaves all radical, on petioles 4 — 6 inches 
long, deeply and triternately notched, with the segments acute. Scape 6 
— 10 inches long, branching towards the summit. Flowers somewhat 
crowded on the scape. Bracteas subulate* Calyx 2-leaved, slightly 
toothed along the margin. Corolla somewhat goblet shaped, of a bright 
VOL. II. Z 
