242 CARYOPIIYLLACE.E. Arenaria. 



Parish Bros., Olicer, Coville & Funston, Davidson; S. Utah, Parrij, Palmer; Arizona, 

 Palmer, Leiiiiiion. 



Var. Parishiorum, Koni>?ox, n. comb. Smooth or minutely glandular-pubescent : 

 caudex scarcely ligneous, densely multicipital : stems slender ; nodes not conspicuously en- 

 larged : leaves chierty basal : petals narrowed at their bases, shorter than or barely equalling 

 the sepals, these fully 3 lines in length: stamiueal glands very large. — A. viacradenlu, var. 

 Parishiorum, Kobin.son, Proc. Am. Acad, xxi.x. 296. ^1. mucrudcnia, Wats. 1. c, in part. — 

 Comniou on mountains bordering the Mojave Desert, Parish Bros. 



A. aculeata, Watsox. Leaves grouped chiefly in fascicles at the summits of a nmltiripital 

 caudex, decidedly glaucous, rigid and pungent and with age strongly spreading, often purple, 

 6 to 12 lines in length; cauline leaves few, shorter: stems simple up to the few-flowered 

 cymes, 4 to 6 inches high : sepals oblong-lanceolate, acute or acutish : petals rather narrow, 

 ellipticoblanceolate, obtuse, U to 2 times as long as the sepals. — Bot. King Exp. 40, & 

 Bibl. Index, 94. A. congesta, var. aculeata, Jones, 1. c. — Chiefly in mountainous di.stricts 

 from Oregon, Nevius, Cusick, Howell, to X. Nevada, Watson, S. Utah and (?) Arizona, 

 Palmer, Toumei/. 

 -t— -1— -t— Sepals laiu-eolate to lance-linear, attenuate, equalling or exceeding the petals. 

 •H- Flowers cymose, not densely aggregated. 



A. Fendleri, Gr.vt. Rather pale and glaucous, finely glandular-pubescent above : stems nu- 

 mcrdus, erect, leafy, 4 to 1.5 inches liigh, closely aggregated upon the summit of a tiiick root : 

 basal leaves setaceous, gramineous, ciliolate or (juite smooth, 2 to 4 inches in lengtli, somewhat 

 pungent; thecaulinegradually shorter, connate and sheathing at the base : internodes an inch 

 or two long: inflorescence dichotomous, few -many-flowered: sepals attenuate, glandular, 

 nearly equalling the obovate white or pale yellow petals (2i to 3 lines in length) : capsule 

 commonly a fourth shorter. — PI. Fendl. 13; Torr. Pacif. K. Kep. iv. 69; Wats. Bot. King 

 Exp. 40, exclusive of var. (jiahresrens ; Porter & Coulter, Fl. Col. 13. — Chiefly in the l^x'ky 

 Mts., but sometimes among the sage-brush of the plains, Nebraska, Engelmann ; Wyoming, 

 Nelson; and Colorado to New Mexico, G. R. Vasey ; San Francisco Mts., Arizona, Lemmon; 

 Los Angeles, Calif., Nevin. The var. diffusa. Porter & Coulter (Fl. Col. 13), is a greener 

 form from the Rocky Mts. of Colorado and Wyoming, with a more lax and spreading inflo- 

 rescence and often although not always larger flowers. It intergrades with the type so that 

 in the herbarium specimens at least its separation is often unsatisfactory. Another form, 

 collected by Prof. Porter in the Garden of the Gods, has very small flowers (sepals IJ to 1-J- 

 lines in length) upon curved and spreading branches. 



++ ++ Flowers densely fascicled at the summit of the stem. 



A. Franklinii, Dougl. Caudex of numerous procumbent more or less elongated branches, 

 covered with somewhat persistent dried leaves: stems quite smooth, erect, simple, 3 to 5 

 inches high, somewhat rigid but fragile, bearing 3 to 6 pairs of narrowly subulate pungent 

 spreading smooth or ciliolate and minutely scabrous leaves (5 to 9 lines long) : cymes den.se, 

 sub-involucrate : sepals elongated, attenuate, pungent with slightly spreading tips, 1-nerved, 

 4 to 6 lines long, distinctly exceeding the petals. — Dougl in Hook. Fl. Bor.-Am. i. 101, t. 35 ; 

 Torr. & Gray, Fl. i. 178; Torr. Bot. Wilkes Exped. 244. — Sandy soil, Oregon, Douglas, 

 Li/all, Howell, Nevius, Cusick; Washington, Suksdorf; Idaho, ^^iss Mulford. Specimens 

 collected by Douglas at source of the Missouri may well have been the next species. 



A. Hookeri, Nltt. Caudex densely multicipital: stems 1 to 4 inches high, pubescent : 

 leaves shorter than in the last : flowers smaller and petals about equalling or slightly exceed- 

 ing the .sepals. — Nutt. in Torr. & Gray, Fl. i. 178. .1. Franklinii, var. minor. Hook. & Arn. 

 Bot. Beech. 326 ; Wats. Bibl. Index, 9.5; Coulter, Man. Rocky Mt. Reg. 35. A. Franklinii, 

 Engelm. Trans. Am. Phil. Soc. n. ser. xii. 186 ; Coulter, 1. c, in great part ; Hook. f. & Jack- 

 son, Index Kew. i. 179, in part. A. pungens, Webber, Cat. Fl. Neb. 1 14. — Nebraska, Ryd- 

 herg, Webber; Rocky Mts., lat. 40°, Nutfall ; Colorado, Vasey, Crandall ; Wyoming, Hay- 

 den, Parry, Porter, Greene, Sheldon, Nelson ; ])lainsof Green River, (rray ; Montana, Tweedy. 

 This species with much the habit of the preceding differs in its much denser caudex and 

 constantly pubescent stem, as well as in the distinctions indicated. The stem is terete even 

 in a dried state, while the stems of A. Franklinii in drying become furrowed and augulate, 

 as though .slightly fleshy. 



