PENNELL: PLANTS OF THE SOUTHERN UNITED STATES 97 
Key to the species 
Spathes with margins not connate at base . 
Two posterior petals blue, anterior a smaller, lanceolate, white. Capsule 
two-celled, four-seeded (no rudiment of third cell). Annual. Stems decum- 
ent at base, rooting at lower nodes. Leaves lanceolate, 8-12 cm. long. An- 
thers six. Seeds 3.5-4 mm. long, gray, rugose. t. C. communis. 
All three petals blue, anterior slightly smaller, ovate. OEE three-celled, five- 
eded aces cell ee pal scent). ane 
eos fibrou at base tk d Spathes 
SITS ee ns acuminate, 10-35 mm. patie glabrous or nearly 
so. Posterior petals long-stalked, 6-8 mm. long. Anthers five (pos- 
terior lacking 
Stems soon erect. Leaves lanceolate, 8-10 cm. long. Spathes becoming 
long-acuminate, 25-35 mm. long. Seeds 2.8-3 mm. eee smooth. 
C. caroliniana. 
Stems extensively creeping. Leaves broadly Re -3-8 cm. long. 
pathes acute, 10-25 mm. long. s 2-2.5 mm. long, reticulate. 
® . C. longicaulis. 
Roots tuberous, clustered. Stems erect, not rooting at the nodes. Spathe 
long-peduncled, caudate, 40-75 mm. long, gent Posterior petals 
short-stalked, ro-12 mm. long. Anthers six. nh, OF re et 
Spathes with margins connate at base. gegreny Seeds sm ‘aaaik. far 
All three petals blue, equal or nearly ovate. Plant strictly erect, soaaicciy 
stout and broad-leaved. Sheaths peeks with ferruginous hairs, without evi- 
dent auricles. Spathes crowded near summit of stem, short-stalked. Two 
anterior eahia’ of capsule each two-seeded, posterior relatively large but one- 
seeded and indehiscent. 5. C. virginica, 
Two posterior petals blue, anterior much smaller, white. Plants often lax or 
slightly decumbent from base, more slender and narrower-leaved. Sheaths 
ciliate on rounded auricles with white hairs. Spathes more scattered, both 
near summit of and in axils along stem, PER Cee ses — - 
one-seeded, posterior normal, dehiscent, becoming reduced, 
to even obsolete. 
Leaf-blades linear-lanceolate to lanceolate, 8-14 cm. long. Posterior petals 
eds somewhat flattened. Roots evidently fleshy. 
omewhat diffuse from the base, but not decumbent 
Stems green, erect or s 
and rooting at the nodes. 
Leaves paar aat Posterior “ usually larger, 12-25 mm. long. 
ostly more or less obl 6. C. erecta. 
Leaves ‘nai wiseits: Posterior es usually smaller, 10-1 5(-~20) 
mm. long. Seeds mostly circu 
Spathes 1.5-3 cm. ak. with ate long 
white hairs near the base 
Posterior = 12-18(—20) } mm. long. 1. C. 
crispa. 
airs nearthe base. F’os- 
18) mm. long. 8. C. angustifolia. 
Leaf-blades lanceolate-ovate to ovate, 5-9 cm 
mm. long. Seeds scarcely flatte Roots acres fleshy. Stems mostly 
reddish, more or less decumbent ae the base and rooting at t 
