Diamond Leaf Pseudosaxifrage

Micranthes rhomboidea (Greene) Small
Saxifraga nivalis Hook. Fl. Bor. Am. 1 : 248, in part. 1832. Not 5. nivalis L.
Saxtfraga rhomboidea Greene, Fittonia3: 343. 1898.

Micranthes rhomboidea
Add the synonym: Saxifraga integrifolia rhomboidea M. E. Jones, Bull. Univ. Mont. 61:32. 1910.
Add: Illustrations: Clements, Rocky Mt. Fl. pl. 31, f. 1; Armstrong, Field Book W, Wild Fl. 203.

Saxifraga rhomboidea austrina A. Nelson, Bot. Gaz. 31 : 394. 1901
Leaves spreading or ascending, 2-6 cm. long, the blades mainly ovoid or rhombicovoid, sometimes oblong-ovoid, obtuse, crenate or dentate-serrate, nearly glabrous except the more or less ciliate margins, mainly green, sometimes purplish beneath, abruptly or gradually narrowed into petiole-like bases which are occasionally longer than the blade itself; scapes mainly erect, 8-31 cm. high, green, copiously glandular-pubescent, simple or Sparingly paniculate above ; cymules aggregated into a terminal head or in several heads terminating the short branches of the inflorescence; bracts subtending the peduncles narrow, green; sepals ovate to triangular, 1.5-3.5 mm. long, barely if at all ciliate, 3veined; petals white, obovate to oblong-obovate, 2.5-4 mm. long, longer than the sepals, commonly notched at the apex, often contracted into broad claw-like bases ; filaments subulate ; follicles 3-3.5 mm. high, green or purple-tinged, the stout tips widely spreading.
Type locality : Mountains of Colorado. Distribution: Montana, Wyoming and Colorado.

Micranthes franciscana Small, sp. nov
Leaves ascending or spreading, 2-4 cm. long, the blades ovate to oblong-ovate, undulate-crenate, nearly glabrous, except the glandular-ciliolate margins, rather abruptly narrowed into broad petiole-like bases which rarely equal the blade in length ; scapes 3-6.5 cm. tall, closely glandular-pubescent, densely so above ; inflorescence ovate, usually broadly so, about 2 mm. long, glabrous or nearly so ; petals white, suborbicular or broadly oval, notched at the apex, clawless ; filaments clavate; follicles not seen.
Type collected on San Francisco Mountains, Arizona, June 9, 1887, by E. A. Mearns, no. 26.