SEDACEAE 585 
Famity 29. SEDACEAEH—OrpinE FAMILY 
Herbs, usually succulent, or partially pd plants. Leaves alternate, 
opposite, or whorled:. blades thick, ‘flat to terete. Flowers perfect or 
dioecious, cymose. C alyx of SEE 46 in sepas. Corolla E as 
any petals as sepals, or wanting. A dul a s many stamens as-— 
sepals .or- twice-as-many. Gynoecium of as y distinct or partially 
united carpels as there are sepals. Fruit follicular. ot 30 genera and 
600 species of wide geographic distribution. 
Sepals distinct or united only at the base: calyx not inflated. 
Petals distinct. 
oA distinct: petals not hooded at the apex. 
ra many as the sepals. Tribe I. E 
Sipi wice as many as the Tribe II. SED 
Carpe s united us the middle: petals "hooded. Tribe III. DISMOREHRE: 
Petals w ith the ws united into a tube Tribe IV. KALANCHOEAE. 
Sepals Gaited into a ele calyx infi ated: Tribe V. BRYOPHYLLEAE. 
I. TILLAEAE 
Very small annual herbs with opposite leaves. 1. TILLAEASTRUM. 
II. SEDEAE 
Follicles erect: plant p um by stout, woody-fleshy, mostly 
underground caudice 
ee ee or polygamous : follicle-beaks stout, short, 
2. RHODIOLA. 
Flowers perfect: follicle-beaks slender, erect. 3. ANACAMPCNBUR 
MEAS widely spreading: plant annual or perennial by fleshy dis 
. SEDUM. 
III. DIAMOBPHEAE 
Diminutive annuals or biennials with wiry stems: corolla pink or purple. 
5. DIAMORPHA. 
IV. KALANCHOEAE 
Rather coarse succulent perennials, growing in tufts, with — 
toothed leaves: corolla yellow ; lobes spreading. 6. KALANCHOE. 
V. BRYOPHYLLEAE 
Coarse succulent herbs, growing in colonies by branching rootstocks. 
T. BRYOPHYLLUM. 
1. TILLAEASTRUM Britton. Annual small aquatic or mud-inhabiting 
herbs. Leaves opposite. Flowers solitary in the axils. Sepals mostly 4. 
Petals mostly 4. Stamens free.  Carpels 
ually 4, distinct. Ovules, or seeds, few- 
Ee About 20 species, widely dis- 
tributed. 
1. T. aquaticum — tae Plant 1-8 
em. tall: leaves 4-6 mm ; blades linear- 
ew d S about g: petals 
[Tilloea € aquati ca L. T. simplex Nutt.|— 
(RIVER-LE —Muddy b m various prov- 
inees, D e Tex., N. S, Mas s. and Md., 
also in W N. A—Spr- —fal 
2. RHODIOLA L. Perennial herbs with woody rootstocks. Leaves alter- 
nate: blades flat, sometimes toothed. Flowers dioecious or polygamous, borne 
