CRASSULACEJE. (ORPINE FAMILY.) 147 
3. PENTHOBUM, Gronov. Ditch Stone-crop. 
Sepals 5. Petals rare, if any. Stamens 10. Pistils 5, united 
below, so as to form a 5-angled, 5-horned, and 5-celled pod, which 
opens by the separation 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, which are coil¬ 
ed at the end as in a Heliotrope. (Name from 7 revrc, five , and opos y 
a rule or mode , probably from the quinary order of the flower.) 
1. P # sedoidcs, L. Leaves lanceolate, acute at both ends.— 
Ditches by road-sides and wet places everywhere. July-Oct.— 
About 1° high, homely. 
Order 47. SAXIFRAgAcEAE. (Saxifrage Family.) 
Herbs or shrubs , with the pistils 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 
5-10) stamens inserted on the calyx , which is either free 
or more or less adherent to the ovary. — Calyx withering- 
persistent. Petals rarely none. Pods several - many-seed- 
ed. Seeds small, anatropous, with a slender embryo in 
the albumen. 
Synopsis. 
Suborder 1. SAXIFRAGE AE. The True Saxifrage Fam. 
Herbs j the petals imbricated (very rarely convolute) in the bud. 
Pod 2-beaked. Calyx free or partly adherent. 
* Petals 5 (or rarely 4-6). 
1. Saxifraga. Stamens 10. Pod 2-celled, or 2 nearly separate pods. 
2. Sullivantia. Stamens 5. Pod 2-celled. Seeds wing-margined. 
3. Heuchera. Stamens 5. Pod 1-eelled. Seeds oval, marginless. 
4. Mitella. Stamens 10. Pod 1-celled. Petals pinnatifid. 
5. Tiarella. Stamens 10. Pod 1-celled. Petals entire. 
* * Petals wanting. 
6. Chrysosplenium. Stamens 8 — 10. Pod 1-celled, obcordate. 
Suborder 2. ESCALLONIEA5 ? 
Shrubs : leaves alternate. Petals valvate in the bud. 
7. Itea. Calyx free from the 2-celled ovary. Petals and stamens 5. 
