120 CONTRIBUTIONS FROM THE NATIONAL. HERBARIUM. 



3. CHROSPERMA Raf. 



1. Chrosperma muscaetoxicum (Walt.) Kuntze. Fly poison. 



Rare, in dry or damp open woodland; Ammendale and Suitland. June. Southern 

 Btatee, north to Long. Isl. {AmiantMum muscaetoxicum A. Gray.) 



4. STENANTHIUM Kunth. 



1. Stenanthium gramineum (Ker) Morong. 



Local in swamps near Bladensburg, Terra Cotta, and Fourmile Run. July. 

 Southern states, north to Pa. {S. robustum of Ward's Flora.) 



5. MELANTHIUM L. Bunch-flower. 



Blade of perianth segments oblong; leaves linear 1. M. virginicum. 



Blade of perianth segments orbicular; leaves oblanceolate 2. M. latifolium. 



1. Melanthium virginicum L. 



Locally abundant in open swampy ground; Reform School, Falls Church, and 

 other swampy regions. July. Eastern U. S. 



2. Melanthium latifolium Desv. 



Dry woods and hills; rare; open ground at Fort Myer; Pinehurst; Stubblefield. 

 July. Conn, to S. C. 



6. VERATRUM L. 



1. Veratrum viride Ait. False hellebore. 



Rare in swamps and bogs; Laurel; Hollywood Swamp; Lincolnia; Magnolia Rim; 

 Suitland. May. Northern states, south to Ga. 



7. UVTILARIA L. Bellwort. 



Leaves sessile; capsule acute at both ends 1. TJ. sessilifolia. 



Leaves with bases united around the stem; capsule truncate at apex. 



2. U. perfoliata. 



1. Uvularia sessilifolia L. 



Common in woodlands; mostly below the fall line. Apr. -May. Northern states, 

 south to Ga. {Oakesia sessilifolia S. Wats.) 

 The flowers are shown in plate 19 A. 



2. Uvularia perfoliata L. 



Common in rich woodland; upper Potomac and Rock Creek regions; Marlboro. 

 Early May. Eastern U. S. 



26. LILIACEAE. Lily Family. 



Among the cultivated genera of this family not included in this list may be men- 

 tioned: Tulipa, tuliTps; Scilla, squilh; By acinthus, common hj&cmths; Yucca, yacca. 

 Hardy forms of some of the above genera are likely to be reported as escapes, but 

 none seems to be definitely established. 



Plants with bulbs or corms. Ovary superior. 



Flowers small, in umbels; plants with an onion-like or garlic-like odor. Perianth 



6-parted; ovules 1 or 2 in a cell 1. ALLIUM. 



Flowers not in umbels; plants not with an onion odor. 



Plants tall, with a leafy stem and terminal inflorescence of large flowers; bulb 



of numerous fleshy scales 2. LILIUM. 



Plants low, with basal leaves and naked scape; bulb onion-like in structure. 

 Flowers less than 4 cm. long. 



Flowers solitary, bractless; leaves two, broad .....3. ERYTHRONIUM. 



Flowers several; leaves several, narrow. 

 Perianth of separate spreading segments; flowers green and white, bracted. 



4. ORNITHOGALUM. 

 Perianth segments united, urn-shaped; flowers blue or white. 6. MUSCARI. 



