244 Order 16.— TIOLACE^ 



Ions when joung. Lts. often divided to the base. Fls. yellow, streaked with 

 purple, the stalks longer than the leaves. Mar., Apr. 



14 v. pubesoens Ait. Villous-pubesceni ; st. erect, naked below; Ivs. broad- 

 cm-date, toothed ; slip, ovate, large, subdentate. — A large yellow violet, found in 

 dry stony woods. Can. to Ga. and Mo. St. simple, somewhat triangular and 

 fleshy, bearing a few leaves at the top. Lvs. broad-ovate, cordate or deltoid, ob- 

 scurely dentate, obtuse, on short stalks. H.-stalka rather shorter than leaves, 

 with 2 subulate bracts. Lateral petals bearded, and with the upper one marked 

 with a few brown hues. The plant varies in pubescence, sometimes even glab- 

 rous. Height very vari.ible, 5 — 2U'. May — Jn. 



p. BRIOCARP V Nutt. Capsulo densely vuIous. (T. eriooarpa Schw.) 

 y. SCABRIUSOULA Torr. & Gr. St. decumbent, branching from the root, and 

 with the smaller leaves somewhat scabrous. (T. scabriusoula Schw.) 



15 V. Cauad^nsis L. Smooth ; lvs. cordate, acuminate, serrate ; ped. shorter 

 than the leaves ; stip. short, eutire. — A large species, found in the woods, British 

 Am. to Car., often a foot in bight. Stem subsimple, terete, all the way leafy, 

 ■ndth lance-ovate, membranous stipules. Lvs. acuto or obtuse, the lower on very 

 long petioles. Fed. sub-4-side;l, ^^ ith minute bracts. Fls. large, nearly regular. 

 Pet. white or light blue, yellowish at base, the upper ones purplish outside 

 and marked with blue lines inside, lateral ones bearded. Flowermg all sum- 

 mer. 



16 V. striata Ait. Smooth; st. branching, nearly erect; lvs. roundi.sh-ovate, 

 cordate, the upper ones somewhat acuminate, crenate-serrato ; slip, large, ciliaie- 

 dentate, oUoivj-lanceolale ; spur one fourth as long as the corolla. — "Wet grounds, 

 U. S. and Can. St. C — 12' high, half round. Lvs. 1 — IV wide, on petioles 

 1 — 2' long. Stip. conspicuous, laeiniate. Ped. axillary, often much longer than 

 the leaves. Cor. Lirge, yellowish-white or ochroleucous, lateral petals densely 

 bearded, lower one striate with dark pui-ple. Stig. tubular. Jn. 



17 V. Mubleubergii Torr. St. weak, assurgent ; lvs. reniform-cordate, upper 

 ones rather acuminate ; stip. lanceolate, somewhat fimbriate ; spur half as long as 

 the corolla, obtuse. — A spreading, slender species, in swamps, &c., TJ. S., N. to 

 Lab. Sts. branched below, C — 8' long, with stipules usually cut into fringe-like 

 serratures. Lvs. 6 — 10" diam., younger ones involuto at base. Petioles longer 

 than the leaves, and shorter than the axillary peduncles. Bracts subulate, mostly 

 opposite, on the upper part of the stalk. Petals entire, pale purple, the lateral 

 ones bearded. Stig. rostrate. May. 



18 V. rostrata L. Smooth ; st. terete, diffuse, erect ; lvs. cordate, roundish, ser- 

 rate, upper ones acuto; stip. lanceolate, deeply fringed; petals bearded; spur 

 longer than the corolla. — A common violet in moist woods. Can. to Ky., well 

 characterized by its long, strai:;lit, linear, obtuse nectary, which renders the large 

 flowers similar to those of the larkspur. St. 6 — 8' high, branching below. 

 Petioles much longer than the leaves. Stip. almost pinnatifid. Pod. slender, 

 very long, axillary. Fls. pale blue. May. 



19 V. tricolor L. Panset, Heartsease. St. angular, diffusely branched; lvs. 

 oblong-ovate, lower ones ovate-cordato, deeply crenate ; st:]}. as large as the 

 leaves ; spur short, thick. — Gardens, where its pretty flowers are earliest in spring 

 and latest in autumn. ¥U. variable in size, often 1' broad, tho 2 upper {lower) 

 petals purple, the two lateral white and with the hirer striate, all yellow at 6a.se. 



/3. ARVBNSIS DC. Annual. More slender and less branched ; upper lvs. ovato- 

 spatulato; petals scarcely twice longer than the calyx, yellowish blue, 

 spotted with purple. (V. arvensis EIL) — This i.s, doubtless, a mere variety 

 escaped from gardens, in rocky hills, N. Y, to Ga. Not common. ,St.s. 

 3—6—10' long. Way. 



20 V. grandiflora L. St. 3-corncrcd, simple, procumbent; lvs. ovate-obloug, 

 crenate, shorter than tho peduncles ; stip. much smaller than the leaves ; fls. large. — 

 Native of Switzerland . A beautiful species, with very large flowers (1 — 2' diam.) ; 

 all the petals alike are deep purple. Whole plant smooth, 6 — 12' long. Stip. 

 i — 1' long. Flowering all seasons but winter, f 



21 V. odorata L. Sweet, OE English Violet. Stolons creeping ; Iva. cor- 

 date, crenate, nearly smooth; sep. obtuse; lateral petals with a hairy line. — Native 



