SAXIFRAGACE^E. (SAXIFRAUE FAMILY.) 141 



4. S. TELEPHIUM, L. (GAKDEN OUPINE or LIVB-FOR-EVUB.) Stems 

 erect (2 C high), stout; leaves oval, serrate, obtuse, toothed; cymes compound ; 

 petals purple, oblong-lanceolate ; pods abruptly iwintud with a short style.. Rocks 

 and banks, escaped from cultivation, and spontaneous in some r. laces. (Adv. 

 from Eu.) 



5. ACRE, L., the MOSSY STONE-CROP or WALL-PEPPER, of Europe, cul- 

 tivated for edgings, has become spontaneous in a few places near Boston. 



S. RHODIOLA, a dioecious species, is indigenous in New Brunswick and 

 northward ; and therefore may grow in Maine. 



3. Pt NT HO RUM, Gronov. DITCH STONE-CROP. 



Sepals 5. Petals rare, if any. Stamens 10. Pistils 5, united below, forming 

 a 5-angled, 5-horncd, and 5-celled pod, which opens by the falling off of the 

 beaks, many-seeded. Upright weed-like perennials {not fleshy like the rest of 

 the family), with scattered leaves, and yellowish-green flowers loosely spiked 

 along the upper side of the naked branches of the cyme. (Name from TrtVre, 

 five, and opoy, a rule or mode, probably from the quinary order of the flower.) 



1. P. sctloides, L. Leaves lanceolate, acute at both ends. Wet places, 

 everywhere. July -Oct. About 1 high, homely. 



SEMPEKVIVUM TECTORUM, L., is the cultivated HOUSE-LEEK. 



ORDER 50. SAXIFRAGACE.E. (SAXIFRAGE FAMILY.) 



Herbs or shrubs, uith the pistils mostly fewer than the petals or divisions of 

 the calyx (usually 2, united below and separate or separating at the top) ; 

 and the petals with the (mostly 4-10) stamens inserted on the calyx, which it 

 either free or more or less adherent to 'he 1 -^-celled ovary. Calyx witlv- 

 ering-persistent. Petals rarely none. Stamens sometimes indefinitely 

 numerous. Pods several -many-seeded. Seeds small, anatropous, with a 

 slender embryo in fleshy albumen. A large family, of which we have 

 three of the suborders. 



SUBORDER I. SAXIFRAGES. THE TRUE SAXIFRAGE FAMILY. 



Herbs ; the petals imbricated or rarely convolute in the bud. Calyx 

 free or partly adherent. Stipules none or adherent to the petiole. 



* Pod 2-celled, 2-beaked, rarely 3- 4-cellec",. and beaked or pods 2 or 3. 

 *- Stamens twice as many as the petals or sepals. 10, rarely 8. 



1. ASTTLBE. Flowers polygamous. Seeds few, and with a loose coat Leaves decompound. 



2. SAXIFUAGA. Flowers perfect. Pod or follicles many -seeded Soed-coat close. 



i- H- Stamens as many as the petals or sepals, namely 5. 



8. BOYK1NIA. Calyx-tube top-shaped, coherent with the ovary. Seed-coat close, rough. 



4. SULL1VANTIA. Calyx bell-shaped, nearly free from the avary. Seeds wing-inargiued 



* * Pod one-celled with 2 parietal placentae. 



t- Stamens as many as the lobes of the calyx, namely 5. 

 ft. HEUCHERA. Calyx bell-shaped, coherent with the ovary below. Petals small, entire. 



