Spring Flora of Oklahoma 
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Petals all beardless: apetalous flowers wanting. 
1. V. pedata. 
Lateral petals bearded: apetalous flowers present. 
Cleistogamous flowers ovoid, on short, prostrate 
peduncles, their capsules usually brown. 
Earliest and latest leaf-blades uncut, others ped- 
ately 3-7-lobed, parted, or divided; seeds gen¬ 
erally buff. 2. V. triloba. 
Leaf-blades all uncut. 3. V. papilionacea. 
Cleistogamous flowers, subulate or sagittate, on erect 
peduncles, their capsules green; foliage nearly 
glabrous. 4. V. sagittata. 
Plants with leafy stems: flowers axillary. 
Style capitate, beakless; spur short; stipules nearly 
entire, soon scarious; petals yellow outside. 
5. V. eriocarpa. 
Style much enlarged upward into a globose, hollow 
summit; stipules large, leaf-like, pectinate at base. 
Upper leaf-blades entire, or obscurely crenulate; 
petals twice the length of the sepals. 
6. V. Rafinesquii. 
Upper leaves and middle lobe of stipules plainly 
crenate; petals large, 2-3 times as long as the 
sepals. 7. V. tricolor. 
1. Viola pedata L. Bird’s-foot Violet. Nearly glabrous. Leaves 
3-divided, the lateral divisions palmately 3-parted or cleft, the seg¬ 
ments linear or spatulate, often 2-4-cleft or toothed near the apex. 
Corolla 9"-21" broad, the upper petals dark violet, the 3 lower lilac- 
purple, all beardless. Cleistogamous flowers wanting. 
In dry fields and open woods. April-June. Eastern part of state. 
2. Viola triloba Schwein. Three-lobed Violet. Earliest and 
late summer leaves usually with uncut blades, reniform, cordate. 
Those unfolding at flowering time, 3-lobed, the middle segment broad, 
the lateral divaricate, often coarsely toothed or cleft. Petals deep 
violet. Cleistogamous capsules ovoid. Seeds buff or brown. 
Dry woodlands. April-May. Eastern part of state. One speci¬ 
men in University of Oklahoma Herbarium. 
3. Viola papilionacea Pursh. Meadow or common Blue Violet. 
Plants usually glabrous, from a stout, horizontal-branching root- 
