388 SAXIFRAGACEAE 



■ 3. M. Columbiana (Piper) Small. Leaves 2-10 cm. long, oblong to elliptic, 



varymg to ovate, shallowly undulate or denticulate, glabrous or nearly so on 

 both sides; scapes erect, 1-3.5 dm. tall, rather copiously glandular-pubescent 

 throughout; sepals ovate to oblong; petals 1.4-2 mm. long. S. Columbiana 

 Piper. Slopes: Wash.— Ida.— Mont.— Ore. Submont. Ap-Je -'■- 



4. M. rhomboidea (Greene) Small. Leaves 



ovate, sometimes oblong-ovate, obtuse, crenate or dentate-serrate, nearly gla- 

 brous except the cihate margins; scapes erect, 8-30 cm. high, glandular-pUfe- 

 cent; sepals ovate to triangular, 1.5-3.5 mm. long; petals white, obovateilb 

 oblong-obovate 2.5^-4 mm. long, commonly notched at the apex. S. nit 

 Am. auth., not L. >!). rhomboidea Greene. Among rocks: Mont — Wvo — N 

 Mont. — Alp. My-Au. < . . ' ■^ ' 



6. M austrina (A. Nels.) Rydb. Leaf-blades 3-5 cm. long, ovate, ellipti^' 

 or rhomboid-ovate, crenate or entire; scape 1-3 dm. high, glandular-pubescent; 

 sepals rounded at apex, as long as the hypanthium ; petals clawed; blades rounded- 

 obovate 2-3 mm long; tips of the folhcles strongly divaricate. S. auslrina A. 

 Nels. Damp soil: Colo. Mont. Je-Jl. 



6. M. Greenei Blankinship. Leaves 2-6 cm. long, ovate to oblong-ovate, 

 or oval-oblong, crenate obtuse at the apex, ciliolate or sometimes almost gla- 

 brous; scapes erect, sohtary, glandular-pubescent throughout; sepals 1-2 mm 

 long, reflexed ovate; petals white, 2-3 mm. long, ovate, oval, or obovate. High 

 mountams: Mont.— Utah— Nev. Mont. Je-Jl. 



7. M. arnoglossa (Greene) Small. Leaves 6-19 cm. long, oblong to elliptic. 



^r7n '^^^ T^T7 T' 'r^^fy glandular-denticulate, ciholate; scapes e?ect, 

 3(H70 cm. tall, stout, glandular-pubescent, rather widely paniculate above; 



obW^o^t^;rf V." ^'^'r^' ^-^.^ mm. long, eciliate; pet'Ils white! mainly 



mZ^ %f^'^^r'?'^-%T- ^T^-o ?-^^^^slossa Greene. HiUs and mountains: 

 Mont.— ;lda.— Colo. Submont.— Subalp. Jf^Au. 



8. M. oregana (Howell) Small. Leaves 3-11 cm. long, oblong or elliptic I 

 Zi icL7 fTf"" S^'^dular-denticulate glabrous except the cfliolate S 

 f^Xov^fJn\.J'^-w'^}'' '^t^n'y glandular-pubescent: paniculate aboVe; " 

 C cllwW %°"-°^b^<^"la^. about 2 mm. long; petals white, oval,-3.5^ mm! 



S. My-Jl ^^""" ""''"''"• ^^* P'^'^'= Wash.-Ida.-Calif. Sub- 



9. M. brachypus Small. Leaves spreading, 6-13 cm lonjr ohlnnir to 



2^^ di; "tTll't ^^^f-^-\-^rr''''t' '^^ -ar'gins^ciliokte; scfpefsS fary^ 

 2-4 dm. tall, sparinfely glandular-pubescent; sepals ovate 1 5-2 mm lone 



?edde'' ^nSh ^^^*^' oblong or nearly so, 3-3.5'mm^ long, cla^lesf sTachyp^ 

 J^edde. High mountains: Colo.— Nev. Alp.—Subalp Jl- An. 



lU. m montanensis Small. Leaves erect or ascending 3 5-14 cm lone 

 entke r^land'i"^^^^^ oblong-lanceolate and spatulate on tl^sam" -plant 



25 60 om ^t^n fin 1 '^ ^'^Z^' ''^^^'' sparingly pubescent; scapes erect, stout 



o;ateto^riani,'ifcLfi^^^^^'"Pt''''^^*^™""^°^*' paniculate above sepals 

 r^lmm S 1 T ' ^c^™"^- lo^g; petals greenish, nearly oblong or elliptic, 

 1-2 5 mm. long, clawless. S. montanensis Small. Mountains: Mont Moni. Je! 



11. M. subapetala (E. Nels.) SmaU. Leaves 3-17 cm long narrowly oblone 

 o'?itd?Xl?;i *^? -1^«^-. - 1-tively shorter and brotfer Til uVduttf 

 SanTl^i« S;s er.t 2S-.0 cm t 1^ thinly 



12. M. Lyallii (Engler) Small. Leaves 1.5-6.5 cm. lone flabeUate var^-in? 

 to suborbicular, cuneate at the base coarselv fpw f ^^Vt^A^' "^^euaie, vary ing 



nearly so. the pe iole-like bases oftenTong:?S the 'Ss'^SrS-stcrL" 

 ffSZJ^l^eTC^^'^l "^^' fT^-vered, or flowed 'soSL^y^^eprovJte 

 hlo^U<^'\ltl^^-tn' ±''\-^l ^.^fl-??; petals whitef^itf 2 yeUow 



3-4.5 mm 



Lvallii FnHpr Alr^T.r7K"A^l .All" ?; uiua.aiy oDiong to suborbicular 

 i^yaiin i^ngler. Along brooks: Alaska-Alta.-Mont.— B C Suhalp. Jl-S 



