486 Rob. E. Fries. 
2 mm long; the soft, dirty-white pappus nearly 3 times as long. (E. 
yellowstonensis A. Nels. Bot. Gaz., XXX: 198, 1900, a name to be rejected.) 
— At middle elevations, in open woods or burned over timber lands; 
Colorado to Montana, 
20. Arnica paniculata A. Nelson, l. c., p. 572. — Stems rather stout, 
4—7 dm high, granular-puberulent and sparsely ciliate-hirsute: leaves 
softly and sparsely hirsute; the radical long-petioled, triangular-lanceo- 
late, mostly with cordate base, the blade 6—10 cm long; stem leaves 
3—4 pairs, ovate-lanceolate; the lower on petioles longer than the 
blades, smaller and shorter petioled (or sessile) upward: inflorescence an 
open foliar-bracted panicle of several to many rather large heads, glan- 
dular-pubescent on the peduncles and the linear-lanceolate involucral 
bracts: pappus obscurely scabro-plumose: achenes dark, with short, 
sparse pubescence. — Mountains of southern Wyoming. 
21. Senecio Rydbergii A. Nelson, l. c., p. 582. — Simple and glabrous 
perennial with a very short caudex; stem 2—3 cm high: basal leaves 
oblanceolate, thick and somewhat fleshy, with the petiole about as long 
as the blade, dentate or subentire; lower stem leaves spatulate, with a 
winged petiole, coarsely dentate; upper stem leaves sessile, with an 
auricled base, lobed with triangular or triangular-lanceolate lobes, acute: 
cyme corymbose and rather dense; heads about 8 mm high; bracts about 
15, acute, the lanceolate ones few, lanceolate: achene striate, glabrous: 
rays 4—5 mm long. (S. fulgens Rydb., Bull. Torr. Bot. Club. XXVII [1900), 
177, not S. fulgens Nichols.) — "Throughout the mountains of northern 
Wyoming into Idaho and Montana. 
22. Hieracium gracile var. minimum A. Nelson, Le, p. 595. — A 
dwarf alpine form, sometimes but a few cm high and with a solitary 
head. — In the higher mountains of Colorado, Utah and north- ` 
ward. ` 
CHI. Rob. E. Fries, Wissadula genus speciebus novis auctum. I. 
(Ex: Kgl. Svensk. Vetensk. Ak. Handl., XLIII [1908], no. 4.) 
1. Wissadula Fadyenii R. E. Fries, l. c., p. 30). — Syn.: Wissadula 
periplocifolia Mac Fadyén, Flora of Jamaica, p. 85 (1837), synonymis ex- 
clusis; non alibi. — Sida divergens Gris., FL Brit. W. Ind. Islands, p. 77 
(1864) [non Bentham}. — Wissadula divergens E. G. Bak. in Journal of 
Botany, XXXI, p. 69 (1893), pro parte. — Wissadula Fadyenii Planch. in 
herb.; nomen nondum public. —- Frutex erectus, ramosus, ramis ad 
3,5 mm crassis, cortice fusco longitudinaliter striatulo obtectis, junioribus 
pilis stellatis flavido-ferrugineis et vulgo diu persistentibus, demum 
cinerascentibus plus minusve dense vestitis; internodia ad 4 cm longa. 
Stipulae subulato-filiformes, 5 mm longae, acutae, stellato-tomentosae. 
1) Tab. I, fig. 1—2 et VI, fig. 2—4. 
