Flowers in a head with involucre of 4 to 6 large white petaloid bracts...........+ 1,2

Flowers yellowish in sessile umbels appearing before the leaves: bracts 4............ 3

Flowers white or cream-color in many-flowered cymes.........- di sGrhsa ie Wigadinne ares is 4to7

1, C, Canadensis, L. Herbaceous, 3 to 8 inches high: leaves in a whorl at top.
2. C. Nuttallii, Audubon. A tree: jnvolucre often tinged with red. (Dogwood.)

3. ©. sessilis, Torr. Bark green: leaves pale and silky beneath: pedicels silky.
4, ©. Californica, C. A, Meyer. Branches purplish: leaves ovate: cyme round-topp’d.
5. ©. pubescens, Nutt. Similar: leaves rarely ovate: cyme larger: fruit white,

6. ©. glabrata, Benth. Bark gray: leaves acute at each end: cymes small, flat.
7. ©. Torreyi, Watson. Leaves ovate or narrower, acute: cyme loose: fruit white.
2. GARRYA, Douglas.
Leaves undulate, base obtuse, tomentose beneath ........... cc cee eee cece eee e eens 1

Leaves not undulate, acute at each end........ 2.0.60 see eee a arayeva a ioeverae wha visre, ey


1. G. elliptica, Dougl. Sterile aments 2 to 5 inches lean, often clustered.
2. G@. Fremonti, Torr. Petioles 4 to 6 lines long: aments solitary, 2 or 3 inches long.
3. G. Dbuxifolia, Gr. Smaller, 2 to 5 ft. high: leaves | to 14 inches long, silky beneath.
DIVISION II.—GAMOPETALA.
CAPRIFOLIACER.
§ 1. Corolla regular, rotate: style short; stigmas 3 to 5: flowers in cymes,
Shrub or tree: young stems thick, pith large: leaves pinnate...... selerseies!-Keamaies d
Blender shrub: leaves simple: fruit a drupe: seeds flat........ foe aerate ea. o aeeies 2


§ 2. Corolla tubular and irregular or campanulate: stigma i, capitate.
