38 MISSOURI BOTANICAL GARDEN. 
Periclyma, Rafinesque, /. c. (1820). See subsect. 
Phenianthi. 
Phenianthus, Rafinesque, 7. c. (1820). See subsect. 
Phenianthi. 
Nintooa, Sweet, Hort. Brit. ed. 2. 258 (1830). See 
sect. Nintooa. 
Distegia, Rafinesque, New Fl. N. Am. 3:20 (1830). 
See subsect. Distegiae. 
Euchylia, Dulac, Fl. Haut.-Pyrén. 463 (1867). 
Flowers pentamerous, usually zygomorphous, sometimes 
actinomorphous; calyx tube ovoid or subglobose with 
usually short, 5-toothed or nearly truncate limb persistent 
or deciduous; corolla tubular-funnelform to campanulate, 
bilabiate with a 4-lobed upper lip or with regular or 
subregular 5-lobed limb, the lobes imbricate, tube short, 
gibbous at the base, rarely calcarate, or slender 
and often elongated; stamens 5, inserted in the tube, 
usually near the mouth, anthers oval to linear-oblong, 
usually exserted; ovary 2-3-, occasionally 4-, or rarely 
5-loculed, cells 3-8-ovuled, ovules pendulous, affixed in 
two rows to the inner angles of the cells; style elongated, 
with capitate stigma, usually exserted and exceeding the 
stamens, rarely included in the tube; berries fleshy, usually 
few-seeded; seeds generally ovoid, compressed, with crus- 
taceous, smooth or granulate testa, fleshy albumen and 
terete embryo; cotyledons generally oval. 
Upright or twining, rarely creeping shrubs, glabrous or 
pubescent and often glandular, with fistulose or solid 
branches; leaves opposite, petioled or sessile and often 
connate at the base, entire or occasionally pinnately lobed, 
petioles sometimes with stipular connate appendages (in- 
terpetiolar stipules); flowers white or yellow, purple or 
scarlet, in simple cymes, two-flowered by suppression of 
the middle flower, or three-flowered and sessile, in the axils 
of normal leaves, or of bractlike leaves and aggregated in 
terminal spikes or panicles; individual flowers subtended 
