SAXJFRAGACE^. (SAXIFRAGE FAMILY.) 141 



*. S. TELiiPHxnM, L. (Gabden Orpine or LiVE-roE-EvsK.) Stems 

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

 petals purple, oblong-lanceolate ; pods abruptly pointed with a short style. — Bocks 

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

 from Eu.) 



S. Acre, L., the Mossy Stone-cbop or Wall-Peppbe, of Europe, — cul- 

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



S. BhodIoiiA, a dioecious species, is indigenous in New Bi-unswick and 

 northward ; and therefore may grow in Maine. 



3. PENTHORVm, Gronov. Ditch Sxone-ceop. 



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

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

 beaks, many-seeded. — Upright weed-like perennials (not ileshy 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 irivre, 

 Jive, and opos, a rule or mode, probably from the quinaiy order of the flower.) 



1. P. sedoldes, L. Leaves lanceolate, acute at both ends. ^- Wet places, 

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



Sempervivum TEOTOEnM, L., is the cultivated House-Leek. 



Order 50. SAXIFRAGACEJE. (Saxifrage Family.) 



Herhs or shrubs, with 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 is 

 either free or more or less adherent to the 1 - i-celled ovary. — Calyx with- 

 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. SAXIFRAGE.a;. 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-beiLked, rarely 3-4-celled and beaked, septicidal. 

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



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



2. SAXIFRAGA. Flowers perfect. Pod or follicles many-seeded. Seed-coat close. 



•<- •*- Stamens as many as the petals or sepals, namely 5. 



3. BOYKINIA. Calyx-tube top-shaped, coherent with the ovary. Seed-coat close, rough 



4. SULLIVANTIA. Calyx bell-shaped, nearly free from the ovary. Seeds wing-margined. 



* * Pod one-celled with 2 parietal' placenta). 

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



5. HEUCHEKA. Calyx bell-shaped, coherent with the ovary below. Petals small, entire. 



