Saxifraga. — Sect. 4. Boraphila. — § 2. Davuricae. 19 



§"2. Davuricae Engl, et Irmscb. 



Caulis floriferus superne paniculatus vel corymboso-paniculatus ; inflorescentiae rami 

 pluriflori, semper longe peduneulati. Folia basalia flabellata, basin versus euneata, apice 

 rotundata, pauciserrata, in petiolum laminae aequilongum vel 2 — 3-plo longiorent sen- 

 sim contraeta. Sepala reflexa vel erecto-patentia; staminum filamenta clavata vel subu- 

 lata; petala sepalis semper longiora, basi unguiculata alba. Capsula subsupera vel ad 

 Y^ longitudinis infera, ovata vel oblongo-ovata, stilis brevissimis stigmate parvo coro- 

 natis instrueta. 



Dispositio specierum gregis Davuricae. 



A. Filamenta clavata, sepala in antbesi reflexa . . . . . . 1 1 . .S*. Lyallii. 



B. Filamenta subulata vel linearia; sepala in anthesi non re- 

 flexa 4 2. S. davurica. 



4 4. S. Lyallii Engl. Ind. crit. in Verh. Zool.-Bot. Ges. Wien XIX. (1869) 542; 

 Mon. Gatt. Sax. (1872) HI; Macoun Catal. of Canad. PI. I. (1883) 153; Howell Fl. 

 Northwest Am. (1903) 192. — S. dahurica Hook. Fl. bor.-amer. I. (1833 — 1840) 250 

 pr. pte. — Micrantiies Lyallii (Engl.) Small in North Amer. Flora XXII. 2. (1905) 4 43; 

 Brown and Schäfler Alp. Fl. of the Canad. Bocky Mts. (1907) 141 pl. 37. — Peren- 

 nis, haud caespitosa, rhizomate tenui obliquo sparsim fibrilloso apice rosulatim foliato 

 instrueta. Caules floriferi scapiformes, solitarii terminales, 8 — 37 cm longi, erecti vel 

 ascendentes, graciles, nudi, superiore tertia parte vel dimidio paniculata, paueiflora, 

 glaberrimi vel superne irregulariter ac sparsissime breviter glanduloso-pilosi. Folia ba- 

 salia rosulata, erecto-patentia, crassiuscula, nervo medio inferne tantum conspicuo, lamina 

 glaberrima, raro margine sparsim breviterque ciliata, flabellata, reniformi- flabellata 

 usque obovato-euneata, 1,2 — 4 cm longa, subaequilata, basi euneata, apice rotundata, 

 antice vel fere toto margine pauci-serrata vel serrato-crenata, serraturis omnibus por- 

 rectis, raro (in Var. laxa) inferioribus subhorizontaliter patentibus, in petiolum lamina 

 I — 2-plo longiorem basi dilatatum euneatim angustata. Inflorescentiae rami 3 — 5, 

 pauci-, 4 — 3-flori, usque 5 cm longi, saepius suberecti, sparsissime glandulosi vel glabri 

 purpurascentes, bracteis parvis linearibus 3 — 7 mm longis plerumque purpureis instrueti; 

 pedicelli graciles, floribus 2 — 4-plo longiores, in fruetu elongati et stricto-erecti glabrius- 

 culi, prophyllis minutis linearibus suffulti; sepala reflexa, triangulari-ovata usque ob- 

 longo-ovata, 1,5 — 3 mm longa 4 — 1,8 mm lata, obtusiuscula, trinervia, nervis sub apice 

 non confluentibus ; petala ovalia vel ovali-obovata usque suborbicularia, 3 — 4 mm longa, 

 1,8 — 3 mm lata, basi distinete breviter unguiculata, 4 — 3-nervia, alba, infra medium 

 luteo-bimaculata; staminum filamenta clavata, haud raro petaloidea, sepala aequantia; 

 ovarium superum, ovoideum, e carpellis oblongo-ovalis saepius tribus vel quinque basi vix 

 connatis compositum, sepalis subaequilongum , in stilos brevissimos crassiusculos stig- 

 mate parvo coronatos sensim contractum. Capsula oblongo-ovata, stilis inclusis usque 

 4 cm longa, purpurascens, stilis I — 1,7 mm longis gracilibus divaricatis et sepalis sta- 

 minibusque reflexis instrueta. — Fig. 4 A — G. 



Pazifisches Nordamerika: an Hochgebirgsbächen. — B. Prov. Bocky Moun- 

 tains. — a. Nördliche Unterprovinz: 56 — 52° (Drummond nach Macoun); 

 Bow Biver Pass, 51° (Bourgeau n. 257 in Pallisers Brit. N. Am. Expl. Exped.), um 

 •!000 m bei Fort Colville (Lyall 1 861 n. 157. — Herb. Berlin). — Britisch Colum- 

 bien: Selkirk um 2300 m und 51° 30" n. Br. (Heacock, in Shaw, Selkirk Fl. n. 310. 

 — Herb. Berlin), ebenda oberhalb Spillimacheen, um 1800 m (Snyder in Shaw, Sel- 

 kirk Fl. n. 402. — Herb. Berlin), Head and Lake Louise (J. Macoun, in Herb. Geol. Surv. 

 Canada n. 65321. — Herb. Berlin), Kootanie-Pass, 49° n. Br. (Dawson nach Ma- 

 coun). — Britisch Nordamerika (Hooker — Herb. Berlin). — Montana: ober- 

 halb Stanton Lake (K. S. Williams n. 4 008. — Un. Stat. Nat. Herb.), Ober Kinnula 

 Gletscher (H. P. Ayres — Un. Stat. Nat. Herb.), Flathead Lake, Mc Donald Peak, um 

 1300 m (M. E. Jones — Un. Stat. Nat. Herb.). 



i* 



