140 CONTRIBUTIONS FEOM THE NATIONAL HERBARIUM. 



1. Streptopus amplexifolius (L.) DC. & Lam. Fl. Fran?. 3: 174. 1805. 

 Uvularia amplexifolia L. Sp. PI. 304. 1753. 



Type locality: "In Bohemiae, Saxoniae, Delphinatus montibus." 

 Range: British America to Arizona and Pennsylvania. 

 New Mexico: Winsor Creek (Standley 4200). Damp woods, in the Canadian Zone. 



5. DISPORUM Salisb. 



Low herb, with creeping rootstocks, erect branched stems, and sessile ovate thin 

 leaves; flowers small, solitary on slender terminal peduncles; perianth narrowly cam- 

 panula te; fruit a 3 to 6-seeded red berry. 



1. Disporum trachycarpum (S. Wats.) Benth. & Hook. Gen. PI, 3: 832. 1883. 



Prosartes trachycarpa S. Wats, in King, Geol. Expl. 40th Par. 5: 344, 1871. 



Type locality: Colorado. 



Range: British America to South Dakota and New Mexico. 



New Mexico: Carrizo Mountains; Tunitcha Mountains; Chama. Damp woods, 

 in the Transition and Canadian zones. 



23. ALLIACEAE. Onion Family. 



Perennial scapose herbs with scaly or reticulate-coated bulbs; leaA^cs few, narrow, 

 basal; flowers in terminal umbels, at first inclosed in and finally subtended by a 

 scarious involucre; perianth segments all alike, petaloid, mostly conspicuous, per- 

 sistent, becoming scarious in fruit; stamens 6; fruit a dry 3-celled capsule. 



KEY TO the genera. 



Perianth segments nearly free (in ours pinkish, fading 

 lighter); capsule deeply lobed, sometimes crested; 



plants strong-scented 1 . Allium (p. 140). 



Perianth segments united for one-third their length or 

 more; capsule not lobed nor crested; plants not 

 strong-scented . 

 Perianth campanulate or funnelform, about 1 cm. 



long, bluish purple 2. Dipterostemon (p. 143). 



Perianth salverform, 3 cm. long, the limb white with 



pronounced greenish midribs 3. Milla (p. 143). 



1. ALLIUM L. Onion. 



Strong-scented herbs with narrow leaves and 1 to several scapes from a coated bulb; 

 flowers in umbels, sometimes replaced by bidblets; perianth of 6 petaloid, nearly free 

 segments; fruit a deeply lobed 3-celled capsule. 



KEY TO the species. 



Outer bulb coats strongly reticulated, the Aeins separating into 

 a mat of fibers. 



Scapes bulblet-bearing 7. A. sabulicola. 



Scapes not bulblet-bearing. 

 Capsules crested. 



Plants tall, 25 to 40 cm.; perianth segments 5 mm. 



long, bright rose pink; pedicels slender 8. A. geyeri. 



Plants lower, 10 to 15 cm., stouter; perianth seg- 

 ments 7 or 8 mm. long, pale pink with 

 prominent mid veins; pedicels stout 9. A. deserticola. 



