480 FLORA. 



ovate, obtuse, 2-spotted; filaments club-shaped; follicles oblong, 4-6 mm. long. In 

 rocky situations, mountains of Va. and N. Car. June-July. 



16. Saxifraga Michauxii Britton. Michaux's Saxifrage. (I. F. f. 1838.) 

 Erect, viscid-pubescent, 15-50 cm. high. Basal leaves oblanceolate or oblong, 

 7-17 cm. long, narrowed into a margined petiole, coarsely dentate; scape leafy - 

 bracted above; inflorescence paniculate; flowers 4-6 mm. broad, irregular; petals 

 clawed, white, the 3 larger ones sagittate or truncate and usually with a pair of 

 yellowish spots at the base, the other 2 spatulate and unspotted; calyx -tube free 

 from the ovary, its lobes reflexed; follicles lanceolate, about 5 mm. long. In dry 

 rocky places. Va. and W. Va. to Ga. May-Sept. [S. leucanthemi folia Michx.J 



17. Saxifraga Geum L. Kidney-leaved Saxifrage. (I. F. f. 1839.) 

 Glandular-pubescent, scapose ; scape 7-25 cm. high. Leaves clustered at the 

 base, 1-2.5 cm. wide; petioles stout, densely pubescent, 2-6 cm. long; inflores 

 cence paniculate ; bracts small, linear ; flowers 4-6 mm. 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 reflexed; capsule oblong. Newf. 

 and in Europe. June-July. 



3. THEROFON Raf. [BOYKINIA Nutt.] 



Glandular-pubescent perennial herbs, with alternate petioled orbicular or 

 reniform leaves, and small white perfect flowers in 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 N. Am. 



I. Therofon aconitifolium (Nutt.) Milhp. Aconite Saxifrage. (I. F. 

 f. 1840.) Stem 3-6 dm. high. Lower and basal leaves long- petioled, reni- 

 form-orbicular, cordate or truncate at the base, palmately 5-7-lobed, sharply in- 

 cised -serrate; upper leaves short-petioled; cymes panicled; pedicels and calyx 

 viscid; flowers white, about 4 mm. broad; calyx-lobes lanceolate, erect; petals 

 oblanceolate ; capsule adnate to the calyx-tube, only its divergent beaks free. In 

 woods, southwestern Va. to N. Car., Tenn. and Ga. July. 



4. SULLIVANTIA T. & G. 



Slender perennial herbs, with mainly basal long-petioled reniform-orbicular 

 crenate or slightly lobed leaves, and small white cymose-paniculate flowers. Calyx- 

 tube campanulate, adnate to the base of the ovary, its limb 5-lobed, the lobes erect. 

 Petals 5, spatulate, marcescent. Stamens 5, inserted at the base of the calyx-lobes. 

 Filaments short. Ovary 2-celled, 2-beaked, ripening into a 2-beaked capsule. 

 Styles 2. Ovules 00 . Seeds winged. [In honor of William Starling Sullivant, 

 1803-1873, American botanist.] Three known species, of North America. 



1. Sullivantia Sullivantii (T. & G.) Britton. Sullivantia. (I. F. f. 

 1 841.) Stem scapose, nearly leafless, reclined, slightly glandular-pubescent, 15- 

 35 cm. long. Leaves long-petioled, 2-7 cm. wide, reniform. sparingly pubescent 

 or glabrous; panicle ample, sometimes leafy-bracted, glandular; pedicels recurved 

 in fruit; flowers about 4 mm. broad; calyx-lobes ovate, acutish; petals entire, 

 exceeding the stamens. On cliffs, Ohio to Minn, and Iowa. June. 



5. TIARELLA L. 



Perennial erect herbs, with the leaves mainly basal, long-petioled, lobed or 3- 

 foliolate, small stipules adnate to the petiole, and white pedicelled racemose or 

 paniculate flowers. Calyx-tube campanulate. nearly or quite free from the base of 

 the ovary, its limb 5 lobed. Petals 5. clawed. Stamens 10; filaments elongated. 

 Ovary [-celled; styles 2; ovule- 00 . Capsule membranous, 1 -celled, 2-valved, the 

 valves usually unequal. Seeds usually few, smooth, not winged. [Diminutive of 

 tiara, from the form of capsule.] About 6 species, natives of N. Am., Japan and the 

 Himalayas. Besides the following, 3 others occur in western N. Am. 



1 Tiarella cordifolia L. Coolwort. False MlTREWORT. (I. F. f. 1842.) 

 Scape 15 30 cm. high, slender, pubescent; plant producing runners later in the 



