prominent lateral ribs: spathes ong, the edges erisped : spadix in- 
a ~ pistillate, 94 B a 
ecu at maturity: m 
GREEN-ARUM.)—Swamps and sh allow 
water, various provinces, Fla. to La., 
Ont., and N. 8. 
P. glauca (Ell) Feay. id Poner es 
p 
l5 staminate: scapes permanently erect 
or dE fruits i less than 
10 1 thie [P. alba Raf. P. sagitti- 
folia Y Mieke) o not Raf. Xantho- 
oma sagittifolium Chapm.]—( WHITE- 
M). — Nona lluvial swamps, usually in acid soil, Coastal Plain and rarely 
adj. provinces, Fla. to Ala. and N. C. (or Va.?). 
5. ARISAEMA Mart. Herbs with corms. Leaf-blades palmate, 3—5- 
divided. Scape permanently erect. Spadix clavate or cylindric, the fertile 
portion ead flower-bearin Spathe cornucopia-like. Fruits red.—5pr.-sum 
—About 50 species, mostly EUM of Asia.—JACK-IN-THE-PULPITS. INDIAN- 
TURNIPS.—The corms of the plants of this genus contain an extremely acrid 
juice, as well as raphides of calcium oxalate. The combination produces a 
violent burning sensation if an attempt is made to s an raw. 
Leaf-segments 3 (the lateral ones rarely 2-lobed) : spathe acute-acuminate: spadix 
E e oon -acuminate or acute; blade dark-colored or striped. 
Hood of the spathe uniformly ‘colored within, black, dud Bron or rarely green: 
246 ARACEAE 
1. P. virginica (L.) Kunth. Eres Pn hi pre. or hastate, with several 
nu portion of the spadix cylindric: fruits 4-6 m 
in eter 1. A. pusillum. 
Hood of he spathe nm Ans within, light- 
iade and brown, or dark- naked portion of 
the.spadix clavate: fruits ET mm. fi diameter. 2. ÁA. = E. 
athe andate acuminate ; blade usually 3. A. vinatu 
pathe abruptly pointed : spadix curved. 4. A. quinatum. 
1. A. pusillum (Peck) Nash. Plan 
uc egments 5 (the lateral ones Sometimes ere united) : 
mostly less than 3 dm. tall: leaf- E 
y. N. Y.—Blooms 
2—3 weeks later than ee next ‘following 
species. 
2. triphyllum (L.) Torr. Plants 
ae over 4 dm. tall: leaf-segments 
8-30 em. long; blades ~ rather ab- 
ruptly short-acuminate: athe-blade 
short-acuminate, pale-green, often striped 
