120 DICOTYLEDONOUS. 



merits setaceous. Flowers in racemes, surrounded by a six leaved involucre, 

 floating on the surface of the water. Calt/x persistent, sesments nearly equal, 

 concave, ovate. Corolla with the upper lip entire, broa3-ovate, smaller than 

 the under hp, lower lip 3-cleft, the lateral segments broad, and shorter than 

 the middle segments. Spur bifid, the lower lamella of the stigma dilated, 

 ciliate, reflexed. 



Yellow. '2|.. Still waters. Very common. 



2. U. Fibrosa. Stem sub-mersed, round. Flowers in simple racemes ; 

 peduncles 6-8 inches long, columnar ; pedicels 1--2 inches long, slender, up- 

 per lip of the corolla large, slightly 3-lobed, lower lip smaller ; spur subulate, 

 emarginate. 



Yellow. %. September— October. 2-3 feet. 



3. U. Saccata. Stem sub-rnersed, glabrous, terete. Leaves alternate, 4-5 

 parted at the base, segments divided, with setaceous segments ; peduncles 

 axillary, 1--2, generally 1 -flowered, upper lip of the corolla nearly round, 

 shorter than the lower ; the middle segment of the lower lip oval, with reflected 

 margin •, spur subulate, covered by the reflexed margins of the middle segment. 



Purple. %■ June — July. Stagnant waters, common. 1-2 feet. 



4. U. LoNGiROSTRis. Stem floating. Leaves divided, with setaceous seg- 

 ments. Flowers on peduncles 2--3 inches long, 2-flowered, lips of the coroUa 

 obscurely 3-lobed, the lower one emarginate, ascending. 



Yellow. % June. Stagnant water. Carolina, Georgia. 



5. U. GiBBA. Stem floating ; peduncle 6-8 inches long, bearing several 

 small flowers. Corolla with the lips obscurely lobed ; sp ur shorter than the 

 lower hp of the corolla, gibbous in the middle. 



Yellow. %' June. In ponds in the low country. 



6. L^ BiPARTiTA' iScape 2-4 inches high, bearing generally several flow- 

 ers. Corolla small ; lips nearly entire, equal ; spur obtuse, half the length of 

 the corolla, lower segment of the calyx generally 2.cleft. 



Yellow. % October. In muddy places. 



7. U. BiFLORA. Stem sub-mersed, slender. Leaves verticillately divided 

 vsrith setaceous segments. Flowers on axillary peduncles; peduncles long, 

 (3--4 inches,) generally 2-flowered ; lips of the corolla entire, or the upper one 

 obscurely 3-lobed, reflexed, shorter than the lower ; spur subulate. 



Yellow. %. May — June. In stagnant water. 



8. U. Personata. Scape 1-2 feet high, slender, glabrous, leafless. Flow- 

 frs 4-10 rather large; upper lip emarginate; spur subulate, slightly curved. 



Yellow. %• July — Aug. In damp soils. Middle Car. &- Ga. 



9. U. Setacea. Stem erect, setaceous, nearly leafless, with a few ovate 

 scales. i^Zowjers on short, setaceous peduncles, 4-7, lower lip 3-lobed, upper 

 lip ovate; spur subulate ; the lower lamella of the stigma incised. 



Yellow. %' April—May. Wet soils, common. 



Order LXIII. SAPOTE^. 



Calyx 5-cleft, regular, persistent. Corolla 5-cleft, hypogy. 

 nous, regular, deciduous. Stamens 5, inserted into the corolla. 

 Style 1. Ovary several celled, with an erect ovule in each cell. 

 Fruit baccate, by abortion only one seeded ; embryo erect, 

 large. Trees or shrubs. Leaves alternate, entire, coriaceous, 

 without stipules. 



Genus I. BUMELIA. 



CaZya: 5-cleft. Corolla 5-cleft, salver form. Style I, para- 

 corolla 5.]eaved ; drupe 1 -seeded. 



