140 COMPOSITE. Bigelovia. 



filiform (hut 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 

 fe\v, onlv 2 to 4 in each vertical rank (these ranks therefore less conspicuous), from broadly 

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

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

 lanceolate lobes. ( Criiiitaria r/.sr/,/,//,/;v(, Hook. Fl. ii. 24, apparently, in part : this founded 

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

 either to this species or to Aplopappus, Ericamcria, nanus.) Chrysothamnus viscidiflorus & 

 C. pumilus, Nutt. Trans. Am. Phil. Soc. 1. c. Biyelocia viscidijiora, DC. Proclr. vii. 279. 

 L/noxi/ri* riwidtfom, Torr. & Gray, 1. c. BrickeUla linearifolia, Klatt, Abh. Nat. Gesells. 

 llalle, 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. puniila (Chrysothamnus pumilus, Xutt. 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 iuvolucral bracts either somewhat greenish-tipped or passing into bract-like leaves. 

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



Var. serrulata, GRAY, I.e. Taller: leaves linear or narrowly lanceolate, serrulate- 

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

 Eaton, Bot. 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 loug, 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 glabrous, or puberulent : 

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

 ol'icn obtuse, 3-5-nerved : flowers sometimes 6 or 7 in the head. Linosyris viscidijiora, var. 

 fiiii/'n 1 !,!, 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-puberuleut. Chrysothamnus lanceo- 

 /utiis, Nutt. Trans. Am. Phil. Soc. 1. c. Linosyris Imiciolnta, Torr. & Gray, Fl. ii. 233. 

 Bigelonla lanceolata, & II. />i->u<//<isii, var. ptiberula, in part, Gray, 1. c. 639, 644. (Linosyris 

 riftciilitlnra, 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- 

 lulu and var. tortifnUa. 



-f H H Akencs glabrous, as also the ovaries, nearly terete: bracts of involucre rounded-obtuse, 

 not prominently pentastichous : anthers and style-tips little exserted: suffrutescent, green and 

 glabrous, not punctate. 



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

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

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

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

 s]'"t 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. 1'roe. Am. Aead. xii. 58. Colorado Rocky Mountains, in Middle Park and Gun- 

 nison Valley, l',/s< //, Parry. Utah, Ward. Transition to Solidayo and to Aplodiscus. 



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

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

 o-iitiv into a -hail-like cusp: limb of corolla enlarging and 5-cleft : style-append- 

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

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

 leaves : habit of Solidayo Euthamia. 



