916 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
8. BRAYULINEA Small. 
A prostrate lanate leafy herb from a perennial root, forming thick mats; leaves 
opposite, ovate, entire; flowers minute, perfect, axillary; calyx campanulate, with a 
5-lobed limb; stamens 5; fruit an indehiscent utricle. 
1. Brayulinea densa (Humb. & Bonpl.) Small, Fl. Southeast. U. 8. 394. 1903. 
Iilecebrum densum Humb. & Bonpl.; Roem. & Schult. Syst. Veg. 5: 517. 1819. 
Guilleminea densa Moq. in DC. Prodr. 18?: 338. 1849. 
Type Locauity: ‘‘In America Merid.”’ 
Rance: Texas and New Mexico to tropical America. 
New Mexico: Water Canyon; Mangas Springs; San Luis Mountains; Organ Moun- 
tains; Queen; Kingston; Santa Rita. Dry hills, in the Upper Sonoran Zone. 
44, CORRIGIOLACEAE. Whitlow-wort Family. 
1. PARONYCHIA Adans. Wuittow-worrt. 
Low herbaceous perennials, lignescent at the base; leaves often acerose, with con- 
spicuous scarious stipules; flowers solitary or clustered, mostly apetalous; sepals and 
stamens 5, the former aristate; fruit a utricle. 
KEY TO THE SPECIES. 
Flowers solitary; elliptic leaves scarcely exceeding the bracts; 
plants densely pulvinate........ 2.22.22... 22.2 ee eee eee eee 1. P. pulvinata. 
Flowers clustered; linear leaves much longer than the bracts; plants 
not pulvinate, 10 cm. high or more.............0cceeeeee eens 2. P. jamesti. 
1. Paronychia pulvinata A. Gray, Proc. Acad. Phila. 1863: 58. 1864. 
TypE Locautity: Rocky Mountains of Colorado. 
Ranee: Wyoming to Utah and New Mexico. 
New Mexico: Truchas Peak; Wheeler Peak. Open slopes, in the Arctic-Alpine 
Zone. 
2. Paronychia jamesii Torr. & Gray, Fl. N. Amer. 1: 170. 1838. 
Type Locauity: Rocky Mountains. 
Rance: Nebraska and Colorado to Texas and New Mexico. 
New Mexico: Bear Mountain; Organ Mountains; west of Roswell; Knowles; 
Berendo Creek; south of Torrance; Buchanan; Nara Visa. Dry soil, in the Upper 
Sonoran Zone. 
45. ALLIONIACEAE. Four-o’clock Family. 
Annual or perennial herbs with usually dichotomous stems, the joints often swol- 
len; leaves opposite or alternate, usually entire, exstipulate, petiolate or sessile, the 
opposite ones often very unequal; flowers regular, perfect or sometimes unisexual, 
mostly subtended by bracts forming a calyx-like involucre; perianth of only a calyx, 
this usually colored and corolla-like; stamens 1 to many; anthers 2-celled, opening 
by longitudinal fissures; ovary 1- celled, superior but surrounded by the calyx tube, 
sessile or short-stalked; ‘stigma usually capitate ; ovule solitary, erect; fruit an antho- 
carp, indehiscent, either fleshy, leathery, or hard, either angled, ribbed, grooved, 
or winged. 
