40 A. Engler und E. Irmschcr. — Saxifragaceae-Saxifraga. 



lanceolatis paucidentatis vel integris suffulti, laxe cymosi 5 — 7-flori in cicinnos exe- 

 untes, pedicelli tenues flore 2 — 3-plo longiores; sepala hypanthio parvo inserta, patcntia 

 oblonga glabra, 1,5 mm longa; petala elliptica vel oblonga subunguiculata, quam se- 

 pala circ. duplo longiora, 2,5—3 mm longa, trinervia; slaminum Glamenta subulata 

 petaüs breviora; pistilli carpidia fere omnino libera elongato-conoidea cum stilis quam 

 stamina breviora. Capsulae carpidia oblongo-ovoidea in stilos breves exeuntia 2,5 — 

 3 mm longa, fere e basi divergentia. 



Nota. Spccies valde affinis Saxifragae tenesscnsi ab ca differt imprimis foliis tenuioribus, 

 inflorescentiis minus multifloris, floribus et capsulis niinoribus. 



Atlantisches Nordamerika. — Provinz des sommergrünen Alleghanie- 

 Waldes. — Nord-Carolina, auf dem Grandfather (A. Gray und Carey 1841 — Gray- 

 Herbarium, A. Gray, S. Sargent, H. Redfield, M. Canby 1879). 



26. S. fallax Greene in Bull. Torr. Bot. Club XXIII. (1x96) 25. — Micraiith™ 

 fallax (Greene) Small in North Amer. Flora XXII. 2. (1905) 141. — Bhizoma ramulis 

 numerosis brevibus hypogaeis, apice folia pauca erecta et caulem tenuem ubique bre- 

 viter glanduloso-pilosum a medio vel jam e parle infera laxe paniculatum 1 — 2 dm 

 altum producentibus. Foliorum basalium lamina tcnuis, supra margine sparse rufo- 

 piloso excepto glabrescens, subtus densius rufo-pilosa, ovala, densiuscule serrata, basi 

 subtruncata vel subcordata in petiolum aequilongum vel • Y2 — 2 '/2"P'° longiorem te- 

 nuem inferne vaginantem et rufo-pilosum contracta. Paniculae laxissimae ramuli in- 

 feriores 4 — 7 cm longae bractea cuneata dentata vel lanceolata, superiores remoti 

 bractea lineari suffulti, cymosi 3 — 5-flori interdum cicinnati, prophyllis angustissimis 

 linearibus et pedicellis tenuissimis 5 — 7 mm longis; sepala hypanthio minulo inserta 

 oblonga circ. 1,2 mm longa; petala anguste obovato-oblonga emarginala, quam sepala 

 circ. 3 ^"P^ longiora, 4 mm longa, 1,2 mm lata: staminum filamenta subulata sepalis 

 paullum longiora. Capsulae carpidia omnino libera breviter ovoidea divergentia, cum 

 stilis brevissimis patentibus circ. 3 mm longa. 



Pazifisches Nordamerika. — Provinz der pazifischen Coniferen. — 

 Südliche Unterprovinz. Sierra Nevada: Emigrant Gap (F. Jones, Fl. of. Calif. 

 n. 3587. — U. St. Nat. Herb.), Larsen's Peak (R. M. Austin — Herb. Greene), ober- 

 halb des Donner Lake (Herb. Greene). 



27. S. parvifolia Greene in Pittonia III. (1896) 116; Howell, Fl. Northwest Amer. 

 I. (1903) 194. — S. Piperi Engl, et Irmscher in Engl. Bot. Jahrb. XLVIII. (1912) 

 608. — Micranthes parvifolia (Greene) Small in North Amer. Fl. XXII. 2. (1905) 141. — 

 Rhizoma ramis brevissimis hypogaeis rosulam atque caulem floriferum 1.4 — 2,2 dm 

 longum pluri(8 — 1 5)^florum, foliis caulinis destitutum vel infra medium foliis parvis spa- 

 thulatis 1 — 2 instructum glabrum aut cum pedunculis plus minusve pilis brevissimis 

 diiHluliferis obsitum emiltentibus. Foliorum basalium lamina late ovata abrupte in pe- 

 tiolum fere aequilongum contracta, 1 — 2 cm longa atque lata, plus minusve inaequa- 

 liter serrata, saepe fere integra, glabra, margine tantum ut peliolus pilis longis rufe- 

 scentibus sparse obsita. Inflorescentiae bracteae sessiles, lanceolatae, 2 — 5 mm loi 



0,6 — 0,8 mm latae, margine brevissime glanduloso-pilosae, pedicelli floribus i — 3-plo 

 longiores, ut pedunculi pilosi; sepala in anthesi erecto-patentia, in fructu reflexa, ovata, 

 4 — 1,3 mm longa, 0,8 — 1 mm lala, glabra, parallele trinervia, nervo medio apice in 

 verruculam exeunle; petala obovata, apice rotundata, basi cuneata vel breviter nngui- 

 culata, 2 — 1,5 mm longa, 1 — 1,5 mm lata, trinervia, alba; stamina circ. 2 3 petalonUD 

 aequantia filamentis subulatis instrucla; ovarium ovoideum carpcllis liberis in stilos gra- 

 ciles longiusculos stigmate parvo coronatos exeunlibus. Capsulae juvenilis carpella ob- 

 longa erecta, stilis divaricatis. 



Nota. Haec species paullum accedit ad Saxifragam californicam Greene, attamen ab 

 illa diffeft potalis obovatis non orbicularibus. 



Pazifisches Nordamerika. — Provinz der pazifischen Coniferen. — 

 Nördliche Unterprovinz mit dem Kaskadengebirge. — Waldige Abhänge, 



