568 BRASSICACEAE 
Plant with elongate rootstocks or rootstocks and creep- 
ane oe S blades simple, with 3 segments or 
segm 
Stem weak, P diffus se or prostrate and more or les 
creeping, with KON OPINE branches or stolons irom 
the upper leaf-ax II. ROTUNDIFOLIAE. 
Stem stiffly erect, aol creeping, typically simple, not 
toloniferoüs. III. CLEMATITES. 
S 
Plants annual or biennial: leaf-blades with several to many 
IV. PARVIFLORAE. 
I. BULBOSAE 
Plant with long-petioled basal leaves,and sessile cauline 
leaves. 1. C. bulbosa. 
ROTUNDIFOLIAE 
II. 
Cauline leaves simple: pod slender-beaked. 
Cauline leaves pinnatifid : pod stout-beaked. 
C. rotundifolia. 
. C. curvisiliqua. 
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III. CLEMATIT 
Leaf-blades or leaflets shallowly 3- or 5-lobed: ed columnar. 4. C. Clematitis. 
pound or leaflets coarsely crenate or crenate-lobed : style 
Flow wers large; ; petals 7-9 mm. long, long-clawed. 5. C. flagellifera. 
Flowers small; petals 4-5 mm. long, almost - dn wiees: 6. C. Hugeri. 
IV. PARVIFLORAE 
Pod short, mostly 1-1.5 c ng. 
Lower r leaves with i bud ed segments. 7. C. debilis. 
ee Nossa: with several narrow segments which are 
r less narrowed at the ‘ba ase. 8. C. parviflora. 
Pod elongate, mostly 2-3 em. long. 
Sta S 6: flowering stems leafy, often conspicuously so. 
Tower leaves with several to many narrow segments. 9. C. arenicola. 
Lower leaves with few broad segments. 10. C. pennsylvanica. 
Stamens 4: flowering stems leafless or sparingly leafy, but 
scape-like, 11. C. hirsuta. 
1. C. bulbosa (Sehreb.) B. S: P. Plant 1-5 dm. tall, with tuber-like bases: 
used leaves 3— :: em. long; blades oval, eliiptie, er or laneeolate: sepals 
becoming 3-3. : long: petals bro oadly 
E ng: Ks) 
. [C. p DC. ]— (SPRING- 
S.)—Swamps and low woods, various 
E N Fla. to Tex., Minn., and N. §. 
—Spr. 
2. C. rotundifolia Michx. Plant 1-4 dm. 
long, pore eee 1—4.5 em. long; blades 
0 
angle ed, som EE es lobed : sepals becom- 
in Paes ut . lo als 8-10 mm. 
Tm the a an pod pud 1.5-2 n 
long, straight.—(M 
Springy. y. places, Blue Ridge E Appalashim 
provinees, N. C. Ky., Ohio, and N. J. 
—Bpr.-sum. 
3. C. curvisiliqua Shuttlw. Plant 3-8 dm. long, cauline leaves 3-9 em. long; 
blades m ple isse d yar ae suborbicular, oval, or obovate un- 
dulate segm sepals becoming 2—2.5 mm. long: petals 4—5 mm. long, da 
late, the spem peres pod L 5-8 em. long, ecurved.— (COASTAL WATERCRE s.)— 
Springs and streams, T —Spr.—fall. 
4, C. Clematitis Shuttlw. Plant stiffly erect, 1-3 dm. tall, from a slender 
horizontal rootstock: cauline leaves 3-8 cm. long; blades or the 3 divisions 
