ORDER CXXXT. — MrXANTHACE^. 5-11 



terminal panicle. Leaves of the perianth equal, persistent, Capaule 

 S-sided, furrowed, 3-celled, pointed with the persistent styles. Sred 

 numerous, angled. — White. U- June. In wel soils. 2 — 4 feet. 



2. Z. HYBra'DUS, (Endl.) Leaves linear-lanceolate, elongated. Flovurs 

 in panicles ; leaves of the perianth narrow, unguiculate ; lamina rhom- 

 boid, sub-orbiculate, margin undulate. — Greenish-yellow. If. Canada 

 to Georgia. 



Genus V.— MELAN'THIUM. L. 6—3. 

 (From melas, black, and anthos, flower, in allusion to the dusky color of the flmvir?.) 



Perianth rotate, expanding; segments unguiculate, with 2 

 glands at the base. Stamens 6, arising from the claws of the 

 perianth. Capsule sub-ovate, 3-celled, partly trifid. Seed nu- 

 merous, winged. 



1. M. Virgin'icds, (Endl.) Stem erect, terete, pubescent, leafy. 

 Leaves long, linear lanceolate, flat, smooth. Flowers in a large panicle, 

 pyramidal ; segments of the perianth ovate, somewhat hastate, flat, 

 i^/oi^frs pol^'gamous. — Greenish-white. If. June — July. Wet mead- 

 ows. S — 4 feet. Zygadenus Virginicus 



2. M. monce'cus. Stem erect, pubescent. Leaves linear lanceolate 

 flat. Flowers monoecious, the lower sterile, the upper fertil.', in panic- 

 ulate racemes. Leaves of the perianth flat, slightly unguiculate.— 

 Gieenish- white. 2f . July. Mountains. 1 — 2 feet. 



Genus VL— UVULA'RIA. L. 6—1. 

 (From uvula, used in curing the disease of the uvula.) 



Perianth inferior, 6-parted, erect, with a nectariferous cavity 

 at the base. Stamens 6, hypogynous, short. Stigmas 3, re- 

 flexed. Capsule 3-celled, 3-valved, many-seeded, angled. 



1. U. perfolia'ta, (L.) Stem erect. Leaves perfoliate, elli|itic, ob- 

 tuse. Perianth campanulate, granular within. Flowers solitary, axil- 

 lary, nodding. Capsw/e 3-angled, truncate. — Yellow. U- April. Com- 

 mon. 8 — 12 inches. 



2. TJ. fla'va, (Smith.) Leaves perfoliate, elliptic, oblong, obtuse, un- 

 dulate at the base. Perianth tapering at the base, scabrous within. 

 u4«^A^rs awned.— Bright yellow. If. May— June. Sandy soils. Com- 

 mon. 8—12 inches. 



3. U. grandiklo'ra, (Smith.) Leaves perfoliate, oblong, acute. Pe- 

 rianth glabrous. Anthers unawned. Nectaries nearly round ; pi>til 

 shorter than the stamens.— Yellow. 2f. May— June. Rocky hills. 

 12 — 18 inches. 



4. U. puber'ula, (Mich.) Leaves oval, rounded at the base, aniphx- 

 icaul, pubescent along the margin. Floioers few, glabrous.— Yellow. 

 May— June. Upper Car. and Geo. 8—12 inches. 



5. U. sbssilifo'lia, (Pers.) Leaves sessile, lanceolate-oval, innny- 

 nerved. Flower 1, on a short peduncle. Segments of the penantlj flat, 

 smooth within.— Yellow. 2f. May— June. Common. 8— 12 inches 



