Vor. II.] SAXIFRAGE FAMILY. 181 
2. Mitella nuda [. Stoloniferous or 
Naked Bishop’s Cap or Mitrewort. 
(Fig. 1849.) 
Mitella nuda I,. Sp. Pl. 408. 1753. 
Stem usually stoloniferous, scape erect, very 
slender, pubescent, 3/-7’ high. Basal leaves reni- 
form-orbicular, obtuse, cordate at the base, crenate 
or doubly crenate, 1/-114’ wide, pubescent with 
scattered hairs on both sides; stem-leaves usually 
none; flowers pedicelled, greenish, about 2’” broad; 
capsule similar to that of the preceding species. 
In cold woods and peat-bogs, Newfoundland and 
Labrador to the Pacific coast, south to New England, 
Pennsylvania, Michigan, and in the Canadian Rocky 
Mountains. Ascends to 3000 ft. in the Adirondacks. 
Also in northeastern Asia. April-June, or blooming 
again in the autumn. 
8. CHRYSOSPLENIUM L.,. Sp. Pl. 398. 1753. 
Low decumbent or erect somewhat succulent mainly semi-aquatic herbs, with petioled 
opposite or alternate crenate leaves, with no stipules. Flowers minute, greenish, axillary or 
terminal, solitary or clustered, perfect. Calyx-tube urn-shaped or obconic, adnate to the 
ovary, itslimb 4-5-lobed. Petalsnone. Stamens 8-10 (rarely 4-5), inserted on the margin of 
a disk; filaments short. Ovary 1-celled, flattish, 2-lobed; styles 2, short, recurved; ovules . 
Capsule membranous, short, inversely cordate or 2-lobed, 2-valved above, few or many-seeded. 
Seed-coat muricate or pilose. [Greek, golden spleen, from some reputed medicinal quality. ] 
About 15 species, natives of the north temperate zone and southern South America. Besides 
the following, 2 others occur in northwestern America. 
Lower leaves opposite; flowers mostly solitary. 1. C. Americanum., 
Leaves all alternate; flowers corymbose. 2. C. alternifolium. 
1. Chrysosplenium Americanum Schwein. 
Golden Saxifrage. Water Carpet. (Fig. 1850.) 
Chrysosplentum opposttifolium Walt. Fl. Car. 140. 1788. Not L. 
C. Americanum Schwein.; Hook. Fl. Bor. Am. 1: 242. 1832. 
Stems slender, decumbent, forked above, glabrous or very 
nearly so, 3/-8’ long. Lower leaves opposite, the upper often 
alternate, broadly ovate, orbicular or somewhat reniform, ob- 
tuse or truncate at the base, rounded at the apex, crenate or 
obscurely lobed, 2’/-10’” wide; flowers sessile, axillary, usu- 
ally solitary, about 1’’ broad; calyx-lobes commonly 4, yel- 
lowish, or purplish within; stamens commonly 8; anthers 
orange-red. 
In wet, shaded places, Nova Scotia to the Saskatchewan region, 
south, along the mountains to Georgia, and to Ohio, Michigan and 
Minnesota, March-June. 
2. Chrysosplenium alternifolium I. Alternate- 
leaved Golden Saxifrage. (Fig. 1851.) 
Chrysosplenium alternifolium I,. Sp. Pl. 398. 1753. 
Flowering stems erect, glabrous or pubescent, 2/-6’ high, 
branched above. Leaves all alternate, the basal ones long- 
petioled, reniform, or cordate, often pubescent on the upper sur- 
face, 3/’-18’’ wide, or crenate with 5-11 rather broad lobes; 
flowers mainly terminal, corymbose; calyx-lobes commonly 4, 
orange-ycllow within; stamens usually 8. 
Decorah, Iowa (according to S. Watson), and in arctic America, 
south in the Rocky Mountains to Colorado and to British Columbia. 
Also in northern Europe and Asia. May-June. 
