176 SAXIFRAGACEAE. (Vor. II. 
16. Saxifraga Michatxii Britton. Michaux’s Saxifrage. (Fig. 1838.) 
Saxifraga leucanthemifolia Michx. F1. Bor. 
Am. 1: 268. 1803. Not LePeyr. 1795-1801. 
Hexaphoma petiolaris Raf. F1. Tell. 2: 67. 
1836. Not S. pefiolaris R. Br. 1819. 
Saxifraga Michauxii Britton, Mem Torr. 
Club, 4: 118. 1894. 
Erect, viscid-pubescent, 6/’-20’ high. 
Basal leaves clustered, oblanceolate or ob- 
long, acute or obtuse at the apex, 3-7’ 
long, narrowed into a margined petiole, 
coarsely and deeply dentate; flowering 
stem naked below, leafy-bracted above; 
inflorescence widely paniculate; flowers 
2//-3// broad, irregular; petals clawed, 
white, the 3 larger ones sagittate or trun- 
cate and usually with a pair of yellowish 
spots at the base, the other 2 spatulate and 
unspotted, narrowed at the base; calyx- 
tube free from the ovary, its lobes re- 
flexed; follicles lanceolate, sharp-pointed, 
little divaricate, about 24’’ long. 
In dry rocky places, mountain summits of 
Virginia to Georgia. May-Sept. 
17. Saxifraga Geum L. Kid- 
ney-leaved Saxifrage. 
(Fig. 1839.) 
Saxifraga Geum I,. Sp. Pl. 401. 1753. 
Densely glandular-pubescent, sca- 
pose, scape erect, 3/-10’ high. Leaves 
all clustered at the base, cordate, kid- 
ney-shaped or orbicular, %4’-1’ wide, 
coarsely crenate all around, borne on 
stout densely pubescent petioles 1/— 
214’ long; inflorescence terminal, pan 
iculate; bracts small, linear, obtuse; 
branches of the panicle ascending, 2- 
6-flowered; flowers 2’/-3’’ broad; petals 
white, oblong or ovate-oblong, with a 
yellow spot at the base and several 
smaller purplish spots at the middle; 
calyx-lobes lanceolate or ovate-lanceo- 
late, reflexed; capsule oblong, its 
beaks slightly divergent. 
Newfoundland and in the mountain- 
ous parts of Europe. June-July. 
3. THEROFON Raf. New Fl. N. A. 4: 66. 1836. 
[Boyvkinra Nutt. Journ. Acad. Phila. 7: 113. 1834. Not Raf.] 
Glandular-pubescent perennial herbs, with alternate petioled orbicular or reniform 
leaves, and small white perfect flowers in branching panicles. Calyx-tube top-shaped or 
subglobose, adnate to the ovary, its limb 5-lobed. Petals 5, deciduous, inserted on the 
calyx-tube. Filaments short. Ovary 2-celled (rarely 3-celled); styles 2, rarely 3. Capsule 
2-celled, the beaks of the carpels divergent. Seeds numerous, the testa shining, minutely 
punctate. [Greek, beast-killing; an old name of aconite.] 
About 5 species, natives of the southern Alleghanies and the mountains of western North 
America, 
