210 [1, 210 
Var. (?) y. stenocarpum Thell. — Silicula relative angusta (4 mm longa, 2!/» 
mm lata), subrhombica (utrinque attenuato-acutiuscula); stylus brevis (!/s— !/z longitudinis 
septi adaequans); petalorum lamina angustior (obovato-oblonga), in unguem subattenuata. 
Idaho: Blackfoot, Snake Plains, 1893, E. Palmer n. 279 — Herb. Univ. Zürich. 
46. L. scopulorum Jones! 
in Proc. Calif. Acad. ser. 2. V. (1895) p. 625; Robinson in Gray & Wats. Syn. fl. N. Am. 
I. 1. (1895) p. 125; L. montanum var. alpinum Wats. Bot. King Rep. (1871) p. 29; 
L. integrifolium var. heterophyllum Wats. in Am. Nat. IX. (1875) p. 268; L. heterophyllum 
Jones in Zo& IV. (1893) p. 284, non Benth. (1826). 
Perenne. Caules plerumque satis pumili, + erecti, basi lignescentes, subcylindrici, 
plerumque fere glabri, parce foliati, ramis paucis in racemos abeuntibus. folia sub- 
coriacea, subnitida, saepe pallido-marginata, saepissime glabra; inferiora longe petiolata, 
circumferentia oblonga vel obovata, in petiolum angustata, pinnatifida lobis latis integris 
vel dentatis; media et superiora angustiora (oblongo-lanceolata), subsessilia, + pinnatim 
incisa vel saltem lobata vel dentata. Flores conspicul; sepala ovata, albo-marginata; 
petala calyce subduplo longiora, distincte unguiculata, lamina subrotunda in unguem ei 
subaequilongum contracta; stamina 2-1-4; glandulae 6 brevissimae.  Aacemi fructiferi 
satis breves et densi, pedicellis subsulcatis, plerumque vix pubescentibus, fere horizon- 
taliter patentibus, quam silicula 1!/»—2-plo longioribus. Silicula ovata, modice compressa, 
apice saepe eximie angustata marginibus rectis vel leviter concavis, acuta, haud profunde 
emarginata, stylo (relative) longo ('/, longitudinis septi aequante) apiculata; valvulae 
leviter carinatae, apice angustissime alatae, maturae reticulatae; septum (relative) latum, 
ellipticum (1:2—3), stylo conspicuo apiculatum. Semina ovoidea, leviter compressa (sub- 
triquetra), vix papillosa, immarginata; embryo notorrhizus. 
Differt a L. alyssoideo et L. montano caulibus minus elatis, basi lignescentibus, 
parce foliatis, foliis distincte coriaceis, silicula multo levius compressa, septo inde latiore; 
a L.alyssoideo praeterea folis caulinis superioribus incisis vel dentatis, a LL. montano 
etiam silicula ovata apice angustata. 
Meist 15—20, seltener bis 25 cm hoch. Grundblätter mit Stiel 7—9 cm lang, 
Stengelblätter kleiner. Kelch + 1!/» mm lang. Frucht 3—4!/; mm lang, 2—2!/» mm 
breit. Same 1—1!/» mm lang, + ?/; mm breit. 
Area geogr.: Am. bor. occ. (Rocky Mountains). 
N. Mexico: Rio Grande, Dona Ana Co. Emory Exped. n. 51 — Herb. Berlin. 
Utah: South. Utah, 1874—5, C. C. Parry n. 16 — Herb. Boiss, DC., Paris; Alta, 
Wahsatch Mts., 8000', 1879, M. E. Jones n. 1270 — Herb. Berl., Boiss., Petersbg., 
Univ. Wien; Lake Blanche, 10000', 1895, M. E. Jones — Herb. Barb.-Boiss. 
Wyoming: Henrys Fork, Uintah Mts., 1902, Goodding n. 1190 (,Z. montanwm*) — 
Herb. Deless. 
