170 SAXIFRAGACE^:. (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. Richardson ii, R. Br.) Mountains of Virginia. Also 

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



4. H. pubdscens, 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. Rich woods, Lancaster, Penn. to 

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



11. MI TELL A, Tourn. MITRE-WORT. BISHOP'S-CAP. 



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

 pinuatifid. 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 /niVpa, a mitre or cap, alluding to the form 

 of the young pod.) 



1 M. diph^lla, L. Hairy, leaves heart-shaped, acute, somewhat 3-5- 

 lobed, toothed, those on the many-Jlowered-scape 2, opposite, nearly sessile. Hill- 

 sides in rich woods : commo'n, especially westward and northward. May. 

 Flowers white, in a raceme 6' - 8' long. 



2. M. liuda, 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. prostrata, Michx.) Deep moist woods in 

 moss, Maine to Penn., III., and northward. May - July. A delicate little 

 plant, sending forth runners in summer. Blossoms greenish. 



12. TJARELLA, 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 

 Tiapu, 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. cordifblia, L. Leaves from the rootstock or summer runners heart- 

 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. CHRYSOSPLENIXJM, 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. 



