438 RANUNCULACEAE 
lobed, ovate to broadly lanceolate, glabrous and thin: flowers solitary, nodding, bluish 
urple, 18-36 mm. long: calyx cylindric below, but the sepals thin and widely spread- 
ing above, their margins undulate: filaments hairy: persistent styles silky, not plumose. 
[ Clematis crispa L.] 
In marshes, southeastern Virginia to Florida and Texas. Spring and summer.—The variety with 
linear or linear-lanceolate leaflets, is V. crispa, Wdlteri (Pursh) Small, [Clematis Walteri Pursh]; it 
ranges from South Carolina and Florida to Texas. 
2. Viorna Símsii (Sweet) Small. A climbing vine, with more or less pubescent 
branches. Leaf-blades pinnate; leaflets entire, lobed or trifoliolate, thick, reticulated, 
generally mucronate : flowers solitary : calyx campanulate, less than 2.5 cm. long, purplish, 
pubescent : sepals with recurved margined tips: filaments hairy: persistent styles more or 
less pubescent, about 2.5 cm. long. [Clematis Simsii Sweet. ] 
In low grounds, southern Indiana to Nebraska and Texas. Spring and summer. 
3. Viorna Gattingeri Small. A slender branching vine 1-3 m. long, climbing over 
rocks and bushes, the foliage copiously glandular. Leaves 1-1.5 dm. long ; blades pinnate ; 
pea less glandular than the stem’; leaflets membranous, lanceolate or broadly lanceo- 
ate, 1.5-5 cm. long, pubescent on both sides as well as glandular, acute or slightly acumi- 
nate, ciliate: peduncles stoutish, 3-5 cm. long: bracts ovate, 5-10 mm. long: calyx 
purple, 10-13 mm. long: sepals felt-like, elliptic or elliptic-lanceolate, often recurved 
from the middle, crested near the edges below the apex, narrowed into recurved caudate 
tips: filaments pubescent: achenes ovate-oval or elliptic, 6-7 mm. long, minutely pubes- 
cent, each face with an ovate or oval impression : persistent styles erect or nearly so, curved 
from below the middle, tawny green, 2-2.5 cm. long, plumose. [Clematis Gattingeri Small. ] 
On the banks of the Cumberland River, near Nashville, Tennessee. Summer. 
4. Viorna reticulata (Walt.) Small. A branching vine several m. long, with 
minutely pubescent or glabrate foliage. Leaves numerous; blades pinnately foliolate ; 
leaflets rather leathery, oblong, lanceolate, oval or suborbicular, 2-8 cm. long, acute or 
apiculate, very prominently and conspicuously reticulated, entire or lobed : pedicels about 
as long as the peduncles: flowers nodding: calyx about 2 cm. long, dull, canescent with- 
out: sepals felty, lanceolate: achenes elliptic, 5-6 mm. long, silky: persistent styles plu- 
mose, 4-5 cm. long. [Clematis reticulata Walt. ] 
In thickets and dry soil, South Carolina to Texas and Florida. Spring and summer. 
5. Viorna versícolor Small. A branching vine 2-4 m. long, with glabrous and glau- 
cous foliage or sometimes an indication of pubescence below the nodes. Leaves numerous ; 
blades slender-petioled; leaflets firm, oblong to ovate-lanceolate, 2-7 cm. long, apiculate, 
glaucescent and conspicuously reticulated above, conspicuously glaucous and prominently 
reticulated beneath : pedicels as long as the peduncles or longer: bracts ovate, 2-2.5 cm. 
long, or the secondary ones smaller and nearly oblong: calyx purplish, about 1.5 cm. 
long: sepals lanceolate, glabrous, slightly recurved at the tip: achenes pubescent: per- 
sistent styles plumose, 3.5-4.5 cm. long, white or nearly so.  [ Clematis versicolor Small. ] 
On dry rocky ledges, Missouri and Arkansas. Summer. 
6. Viorna coccinea (Engelm.) Small. A vine several m. long, with branching 
stems. Leaves numerous ; blades mostly pinnate on sometimes tendril-like petioles; leaf- 
lets ovate to ovate-lanceolate or suborbicular, 4-6 cm. long, acute, obtuse or even notche 
at the apex, entire or rarely lobed, glaucous and more or less prominently reticulated be- 
neath, mostly truncate or subcordate at the base : flowers scarlet or purple-red, ovoid or 
globose-ovoid, about 2 cm. long, nodding: sepals with spreading or recurved tips : achenes- 
mostly broader than long, 6-7 mm. wide, silky: persistent styles plumose, 3-5 cm. long. 
[Clematis coccinea Engelm. ] 
In thickets and along streams, Texas. Spring. 
_7. Viorna obliqua Small. A climbing vine, with elongated stems. Leaves with long 
petioles ; leaflets thickish, ovate or ovate-lanceolate, 3-8 cm. long, slightly acuminate, 
erose-denticulate and undulate, truncate at the inequilateral base, long-stalked : calyx 
conic, about 3 em. long, sparingly pubescent without : sepals lanceolate, recurved at the tip. 
In pine lands, near St. Augustine, Florida. 
_ 8. Viorna flaccida Small. A slender vine, the stems climbing over bushes, angled, 
thinly pubescent or glabrous below, branched, enlarged below the nodes and there densely 
hairy like the branchlets and petioles. Leaves many ; leaflets thin, oblong, ovate or ovate- 
lanceolate, 2-10 cm. long, slender-stalked, apiculate or rarely acuminate, densely silky be- 
neath, sparingly so above or glabrate, entire or nearly so: bracts similar to the leaflets, 
but usually smaller and sessile or nearly so : peduncles usually slender, commonly in clusters- 
of 3’s: calyx greenish to light lavender, about 1.5 cm. long, nodding : sepals pubescent 
without like the lower surface of the leaflets, acutish, with very short tails : achenes rhom- 
