376 



SAXIFRAGACEAE 



obovoid, horizontal or ascending, comparatively smooth and shining. [Name derived from 

 the Latin pecten, meaning comb, in reference to the outline of the petals.] 



A genus of about 5 species, natives of western North America and Japan. Type species, Pectiantio pentandra 

 (Hook.) Rydb. 



Stamens opposite the petals. 

 Stamens opposite the sepals. 



Leaf-blades reniform, glabrate. 



Leaf-blades oval with a cordate base, distinctly hirsute. 



1. P. pentandra. 



2. P. Breweri. 



3. P. ovalis. 



1. Pectiantia pentandra (Hook.) Rydb. Alpine Mitrewort or Bishop's Cap. 



Fig. 2283. 



Mitella pentandra Hook. Bot. Mag. 56: pi. 2933. 1829. 



Drummondia mitelloides DC. Prod. 4: 50. 1830. 



Pectiantia mitelloides Raf. Fl. Tell. 2: 72. 1836. 



Mitellopsis Drummondia Meisn. PI. Vase. Gen. Comm. 100. 1838. 



Mitellopsis pentandra Walp. Rep. 2: 370. 1843. 



Pectiantia pentandra Rydb. N. Amer. Fl. 22: 93. 1905. 



Pectiantia latiflora Rydb. loc. cit. 



More or less glabrate perennial with a short rootstock ; scapes slender, 1-3 dm. high, 

 minutely glandular-puberulent, especially above. Leaves cordate to round-reniform, coarsely 

 crenate to unequally serrate, obscurely round-lobed, glabrous to sparingly pubescent on both 

 sides with distinct short white hairs, 2-6 cm. wide ; petioles 2-12 cm. long, glabrous to tawny- 

 hirsute- raceme lax, 8-20-flowered ; hypanthium including the sepals 2.5-3.5 mm. wide, green, 

 often purplish within; sepals broadly triangular, obtuse, often recurved; petals irregular, 

 pectinately pinnatifid with filiform pinnae and rachis ; stamens 5, opposite the petals. 



In damp shaded woods and bogs, Canadian and Hudsonian Zones; Alberta and Alaska southward to Colorado 

 and the northern Coast Ranges and southern Sierra Nevada of California. Type locality: "Rocky Mountains of 

 North America." Type specimen raised from seed collected by Drummond. May-July. 



2. Pectiantia Breweri (A. Gray) Rydb. Brewer's Mitrewort. Fig. 2284. 



Mitella Breweri A. Gray, Proc. Amer. Acad. 6: 533. 1865. 

 Pectiantia Breweri Rydb. N. Amer. Fl. 22: 93. 1905. 



Comparatively glabrous perennial from a rather slender rootstock ; scapes one or several, 

 slender 6 mm.-3 dm. high, scarcely perceptibly pubescent and glandular. Leaves reniform to 

 round-cordate glabrous to sparingly pubescent on both sides, serrate-crenate with short apicu ate 

 teeth obscurely shallow-lobed, 4-8 cm. broad; petioles hirsute with tawny and more or less 

 curled hairs especially above, 4-10 cm. long, subtended by large, scanous brown bracts ; flowers 

 greenish occasionally in pairs; hypanthium saucer-shaped, together with the sepals 3-4 mm. 

 broad ; sepals very broadly ovate, obtuse, reflexed ; petals pinnate with filiform pinnae ; stamens 



5, opposite the sepals. 



In damp coniferous forests, Canadian and Hudsonian Zones; British Columbia and Alberta to northern 

 Idaho and southward in the Cascade Mountains and Sierra Nevada to Tulare County, Californ.a. Type locality: 

 Mount Hoffmann, Mariposa County, California. June-Aug. 



3. Pectiantia ovalis (Greene) Rydb. Coastal Mitrewort. Fig. 2285. 



Mitella ovalis Greene, Pittonia 1: 32. 1887. 

 Mitella Hallii Howell, Erythea 3: 33. 1895. 

 Pectiantia ovalis Rydb. N. Amer. Fl. 22 : 94. 1905. 



Hirsute perennial from a slender rootstock ; scapes 1-3, 1 . 5-3 dm. high, minutely glandular- 

 hirsute above, conspicuously hirsute with reflexed hairs toward the base. Leaves oval to ob- 



2279 

 2279. Tolmiea Menziesii 



2280 



2280. Bensonia oregona 



