170 SAXIFRAGACE^E. (SAXIFRAGE FAMILY.) 



* * Flowers larger: calyx (3" -4" long) more or less oblique: stamens short: panicle 

 very narrow: leaves rounded, slightly 5-9-lobed. 



3. H. hispida, Pursh. Hispid or hirsute with long spreading hairs (oc- 

 casionally almost glabrous), scarcely glandular; stamens soon exserted, longer than 

 the spatulate petals. (H. Richardsonii, R. Br.) — Mountains of Virginia. Also 

 Illinois (Dr. Mead) and northwestward. May -July. — Scapes 2° -4° high. 



4. H. pubescens, Pursh. Scape (l°-3° high) and petioles granular- 

 pubescent or glandular above, not hairy, below often glabrous ; stamens shorter than 

 the lobes of the calyx and the spatulate petals. — Eich woods, Lancaster, Penn. to 

 Virginia and Kentucky, along the mountains. June, July. 



11. MITELLA, Tourn. Mitre-wort. Bishop's-Cap. 



Calyx short, coherent with the base of the ovary, 5-cleft. Petals 5, slender, 



pinnatifid. Stamens 10, included. Styles 2, very short. Pod short, 2-beaked, 



1-celled, with 2 parietal or rather basal several-seeded placentae, 2-valved at the 



summit. Seeds smooth and shining. — Low and slender perennials, with round 



heart-shaped alternate leaves on the rootstock or runners, on slender petioles ; 



those on the scapes, opposite, if any. Flowers small, in a simple slender raceme 



or spike. (Name a diminutive from fxirpa, a mitre or cap, alluding to the form 



of the young pod.) 



. "«. 1. M. diphylla, L. Hairy, leaves heart-shaped, acute, somewhat 3-5- 



i n lobed, toothed, tlcose on the many-Jlowered-scape 2, opposite, nearly sessile. — Hill- 



' ^ sides in rich woods : common, especially westward and northward. May. — 



AMiX • (\ Flowers white, in a raceme 6' - 8' long. t 



^^ 2. M. nuda, L. Small and slender ; leaves rounded or kidney-form, deeply 



and doubly crenate ; scape usually leafless, few-flowered, very slender (4'- 6' 



high). (M. cordifolia, Lam. M. prostrate, Mfckx.) —Deep moist woods in 



moss, Maine to Wisconsin and northward. May -July. — A delicate little 



plant, sending forth runners in summer. Blossoms greenish. 



12. TIAEELLA, L. False Mitre-wort. 



Calyx bell-shaped, nearly free from the ovary, 5-parted. Petals 5, with claws, 

 entire. Stamens 10, long and slender. Styles 2. Pod membranaceous, 1-celled, 

 2-valved ; the valves unequal. Seeds few, at the base of each parietal placenta, 

 globular, smooth. — Perennials : flowers white. (Name a diminutive from 

 Tiiipa, a tiara, or turban, from the form of the pod, or rather pistil, which is like 

 that of Mitella, to which the name of Mitre-wort properly belongs.) 



1. T. cordifolia, L. Leaves from the rootstock or summer runners heart- 

 ' t«- 0*. shaped, sharply lobed and toothed, sparsely hairy above, downy beneath; scape 

 leafless (5'- 12' high); raceme simple; petals oblong. — Rich rocky woods: 

 common northward, and southward along the mountains. April, May. 



13. CHRYSOSPLENIUM, Tourn. Golden Saxifrage. 



Calyx-tube coherent with the ovary; the blunt lobes 4-5, yellow within. 

 Petals none. Stamens 8-10, very short, inserted on a conspicuous disk. 



