140 COMPOSITE. Bigelovia. 



filiform (but plane or canaliculate) to lanceolate-oblong, mostly 3-nerved : heads few or 

 numerous and fastigiate-cymose, 3 or 4 lines high : bracts of the involucre comparatively 

 few, only 2 to 4 in each vertical rank (these ranks therefore less conspicuous), from broadly 

 to linear-oblong or lanceolate, obtuse (rarely acute), firra-chartaceous, not rarely some of the 

 outer with firmer and indistinctly greenish apex : corollas rather deeply cleft into oblong- 

 lanceolate lobes. — ( Crinitaria viscid/ flora, Hook. Fl. ii. 24, apparently, in part : this founded 

 on two specimens, both with heads undeveloped, one puberuleut, one glabrous, to be referred 

 either to this species or to Aplopappus, Ericameria, nanus.) Chri/soihamnus viscidiflorus &■ 

 C. piimiius, Nutt. Trans. Am. Phil. Soc. 1. c. Bigeloma viscidijiora, DC. Prodr. vii. 279. 

 Linosyris viscidijiora, Torr. & Gray, 1. c. Brickellia linearifolia, Klatt, Abh. Nat. Gesells. 

 Halle, XV. 5. — Plains and mountains, in sterile soil, Dakota to Washington Terr, and border 

 of Brit. Columbia, dry eastern border of California, and south to Arizona and New Mexico ; 

 in various forms. Taking the forms with linear and lanceolate smooth leaves as the type, 

 the marked variations are 



Var. pumila (Chrf/sothamnus pnmilus, Nutt. 1. c, with his var. euthamioides), a dwarf 

 northern and mountain state, a span or two high, glabrous or minutely puberulent and dis- 

 posed to be viscidulous ; the simple branches bearing very few heads in a close cluster : 

 outer involucral bracts either somewhat greenish-tipped or passing into bract-like leaves. — 

 N. Montana to Washington Terr, and mountains of Utah. 



Var. serrulata, Gray, 1. c. Taller : leaves linear or narrowly lanceolate, serrulate- 

 ciliolate, sometimes scabrous and rigid. — Linosyris serrulata, Torr. in Stansbury Rep. 389; 

 Eaton, Bnt. King Exp. 157. — Common through the whole dry interior region. 



Var. tortifolia, Gray, 1. c. Leaves twisted : otherwise like the preceding. — Plains 

 of Colorado to the Sierra Nevada, California. Here Linosyris lanceolata. Hook. Loud. Jour. 

 Bot. vi. 243. 



Var. stenophylla, Gray, 1. c. Leaves slender, at most a line wide by an inch or 

 two long, or narrower and varying to filiform, smooth : flowers sometimes only 4. — N. W. 

 Nevada to S. E. California, Utah, and New Mexico. 



Var. latifolia, Gray, 1. c. Stouter and taller, smooth and glal)rous, or puberulent : 

 leaves lanceolate to narrowly oblong (the broadest even half-inch wide by thrice that length), 

 often obtuse, 3-5-nerved : flowers sometimes 6 or 7 in the head. — Linosyris viscidijiora, var. 

 latifolia, Eaton, Bot. King Exp. 1. c. — S. Idaho, Nevada, and Utah. 



Var. lanceolata. Low, but bearing compact cymes of numerous (5-7-flowered) 

 heads : leaves short, lanceolate or broadly linear, scabro-puberulent. — Chrysothamnus lanceo- 

 latus, Nutt. Trans. Am. Phil. Soc. 1. c. TJnosyris lanceolata, Torr. & Gray, Fl. ii. 233. 

 Bigelovia lanceolata, & B. Douylasii, var. puherula, in part, Gray, 1. c. 639, 644. [Linosyris 

 viscidijiora, var. puberula, Eaton, 1. c, is mainly a scarcely puberulent narrow-leaved form of 

 the type.) — Head-waters of the Platte, Wyoming and Montana, &c. Passes into var. serru- 

 lata and var. tortifolia. 



^ — K- -i— Akenes glabrous, as also the ovaries, nearly terete : bracts of involucre rounded-obtuse, 

 nrit promincntl}' poutastichous: anthers and style-tips little exserted: suffrutescent, green and 

 glabrous, not punctate. 



B. Vaseyi, Gray. A span or two high, somewhat balsamic-viscid but wholly glabrous, 

 leafy up to the fastigiate-cymose cluster of heads : leaves linear or spatulate-linear, obtuse, 

 plane (at most inch long), with obscure midrib: involucre cylindraceous, 3 or 4 lines long; 

 its bracts narrowly oblong, firm-chartaceous, and all but innermost with a thickened greenish 

 spot at the very obtuse apex : lobes of the corolla short-linear : style-appendages narrowly 

 subulate, rather obtuse, half the length of the stigmatic portion : pappus fine and soft, rather 

 short. — Proc. Am. Acad. xii. 58. — Colorado Rocky Mountains, in Middle Park and Gun- 

 nison Valley, Vasey, Parry. Utah, Ward. — Transition to Solidayo and to § Aplodiscus. 



§ 3. EuBiGELOViA, Gray, 1. c. Heads as of preceding section, very narrow, 

 3-4-flowered : alveoli of the receptacle prolonged into subulate teeth or at the 

 centre into a chaff-like cusp : limb of corolla enlarging and 5-cleft : style-append- 

 ages ovate-subulate, shorter than the stigmatic portion : akenes short, somewhat 

 turbinate : pappus rigidulous : wholly herbaceous perennial, with entire narrow 

 leaves : habit of Solidago § Euthamia. 



