200 
only when young. Plants blooming early in April and 
a) E LJ . 
Pods long-hairy. 168 Zionis. 
Pods appearing nearly smooth. 169 remulcus, 
A23. Pods sessile, not evidently inflated, fleshy aud pulpy, 
opening along the ventral suture. Pubescence attached by 
tue middle or near it and hairs pick-shaped. Plants acau- 
lescent, or nearly so in small tuits, short-lived perennials 
or winter annuals, some blooming the first year. 
A2BC. Pods rounded at base, with loose outer coat separa- 
ting from t.e inner wall either by a cellular interspace, 
or by splitting and peeling off. Neither suture intruded, 
aan raised a little externally and thin. Pods not re- 
exed. 
A2BCD. Pods 1.5-5 cm. long, very oblique but not much 
arched and with tip variably but not greatly upturned, 
smooth or nearly so when ripe, triangular-apiculate 
to conical beaked, with pulp coarsely cellular which 
on drying leaves the two coats separated by a spongy 
interspace, but the outer papery coat does not peel 
up, this makes the dry pods very light and easily blown 
about in the wind; inner coat thicker or tougher, char- 
taceous. Flowers about 2.5 cm. long, mostly white or 
brillianı-pink-purple, capitate, few, blooming very 
early. Ped'ncles decumbent at least in fruit. . Plants 
with thick, fleshy, tapering, long, erect tap root. 
Pods wit. outer skin conspicuously reticulated, except 
var. laccoliticus. Flowers white or whitish. 170 pygmaeus, 
Pods with outer skin not reticulated. Flowers dark- 
pink purple. 171 Musiniensis. 
A2BC2D. Pods about 1.5-2 cm. long, very fleshy, straight, 
narrowly oblong, with cross-section nearly round 
when fresh, 4-anzled and not spongy and with raised 
sutures when dry, but outer coat drying close to the 
inner wall and when old splitting along the ventral 
suture and spreading out flat from tip to tip like a 
wing but not separating along the dorsal suture, thus 
giving the pod an elliptical eutline. In A. Missouri- 
ensis this is not so marked and often the outer wall 
simply separates with age and flares a little. Flow- 
ers not large. Claws of petals not exserted. Whole 
plant hoary even to the peduncles. Missourienses. 
Pods broadly winged when dry. Flowers whitish. 
172 cymboides. 
Pods not broadly winged when dry. Flowers purple. . 
; 173 Missouriensis. 
. A2B2C. Pods 1.5-8 cm. long, narrowed at both ends, 
very acute, arcuate, fleshy but not cellular nor spongy 
nor walls separating, ventral suture conspicuously 
raised when dry and the dorsal not at all or very thin 
Flowers large, 2-5 cm. long, brilliant-pink-purple 
‚when fresh, bluish when dry. Stems and peduncles 
hoary. 174 amphioxys. 
‘2A. Pods densely woolly or variably shaggy, seldom sulcate 
ventrally and dorsally except at base, normally round to 
obcompressed in cross-section, sessile or with stipe not 
longer than wide, conspicuously inflated only in A. New- 
berryi and funereus forms, splitting the calyx, coriaceous 
when dry, only slightly fleshy or, rarely, flesh is thicker 
and cellular, arcuate at tip or, rarely, triangular-apiculate. 
Flowers purple, ze white or red, 1.5-5 cm. long, capitate. 
. Calyx tube cylindrical. Peduncles never much longer than 
