108 
* Stamens 20 or more: ovary inferior: seeds numerous. 
3. Philadelphus. Ovary 4 or 5-celled: petals convolute in bud. 
** Stamens fewer: ovary superior or nearly so. 
4. Fendlera. Calyx-tube half-adherent to the 4-celled ovary and capsule: petals 
4, ovate-deltoid: stamens &, the filaments 2-lobed: styles 4. 
5. Whipplea. Calyx nearly free from the 3 to 5-celled ovary: petals 5 or G: sta- 
mens 4 to 12: styles 3 to 5, distinct: seeds and ovules solitary in the cells, 
TriBE ILI. Shrubs, with alternate simple leaves, and fruit a berry.—RIBESIE2. 
6. Ribes. Calyx-tube adnate to the 1-celled ovary: placent 2, parietal, many- 
seeded. 
1. HEUCHERA. L. (ALUM-ROOT.) 
Perennials, with the round heart-shaped leaves principally from the 
rootstock, greenish or purplish flowers in small clusters disposed in a 
prolonged and narrow panicle, a bell-shaped calyx coherent with the 
ovary below, small entire petals, 5 stamens, 2 slender styles, and a 
i-celled 2-beaked capsule opening between the beaks. 
1. H. rubescens Torr. Scape usually naked, glabrous or somewhat scabrous, 2: 
to 4 dm. high: leaves nearly glabrous, slightly lobed, crenate-dentate, the teeth cil- 
iate: panicle loosely many-flowered, often somewhat reddish: petals linear, more or: 
less rose-colored or white: stamens and styles exserted.—Mountains west of the: 
Pecos. 
2. LEPUROPETALON EI. 
A very small tufted annual herb, with alternate spatulate leaves, sol-. 
itary terminal white flowers, a turbinate calyx cohering with the ovary 
below, minnte spatulate petals, 5 very short stamens, 3 styles, and a. 
globular 1-celled many-seeded capsule loculicidally 3-valved at apex. 
1. L. spathulatum EJ]. Only 12 mm. or so high.—A very early bloomer; in damp: 
places in the Gulf States, and extending into the low grounds of eastern and southern. 
Texas, 
3. PHILADELPHUS [.. (Syrinca. Mock ORANGE.) 
Branching shrubs, with opposite (in ours entire) leaves, showy white: 
flowers, a 4 or 5-parted calyx-limb, large rounded or obovate petals. 
convolute in bud, 20 or more stamens, 3 to 5 united styles, and an in-- 
feriov 4 or 5-celled many-seeded ovary becoming a capsular fruit. 
1. P. microphyllus Gray. Branches slender and erect: leaves small, 12 to 18 mm... 
long, ovate-lanceolate or oblong, shining above, pale and minutely pilose beneath, . 
narrowed at base into a very short petiole: calyx 4-cleft, glabrous without, tomen- 
tulose within: styles united to the apex.—In the mountains west of the Pecos. 
2. P. serpyllifolius Gray. A low much branching bush with rigid crowded 
branches: leaves smaller, 6 to 10 mm. long, much crowded, oval or ovate oblong, ob- 
tuse, green and pubescent or pubernlent above, white with a dense covering of ap- 
pressed villous hairs beneath: flowers smaller, very numerous, mostly solitary and. 
subsessile at the apex of the spurs or short leafy branchlets: calyx silky-pubescent: 
styles very short, united to the apex.—In the mountains west of the Pecos, and. 
extending east of it to the Sabinal (Reverchon). 
