OORNACE^E. 



131 



compound umbels; the inferior ovary surmounted by a disk which bean 6 petals and 

 otamena: styles 2. The plants of this order are not here described. 



CORNACE.E. 



Flowers in cymes or heads: petals 4: style 1: ovary 2 -celled. , 1 



Flowers dioecious, in drooping blue-gray catkins: petals none: styles 2. 8 



1. CORNTTS, Linnaeus. 



Flowers in a head with involucre of 4 to 6 large white petaloid bracts 1, 8 



Flowers yellowish in sessile umbels appearing before the leaves: bracts 4 8 



Flowers white or cream-color in many-flowered cymes 4 to 7 



1. 0. Canadensis, L. Herbaceous, 3 to 8 inches high: leaves in a whorl at top. 



2. 0. Nuttallii, Audubon. A tree: involucre often tinged with red. (Dogwood.) 



3. 0. sessilis, Torn Bark green: leaves pale and silky beneath: pedicels silky. 



4. 0. Calif brnica, 0. A. Meyer. Branches purplish: leaves ovate: cyme round- toppM. 



5. 0. pubescens, Xutt. Similar: leaves rarely ovate: cyme larger: fruit white. 



6. 0. glabrata, Benth. Bark gray: leaves acute at each end: cymes small, flat. 



7. 0. Torreyi, Watson. Leaves ovate or narrower, acute: cyme loose: fruit white. 



2. GARBYA, Douglas. 



Leaves undulate, base obtuse, tomentose beneath 1 



Leaves not undulate, acute at each end 2, 8 



1. G. elliptica, Dougl. Sterile aments 2 to 5 inches long, often clustered. 



2. G. Fremonti, Torr. Petioles 4 to 6 lines long: aments solitary, 2 or 3 inches long. 



3. OK buadfolia, Or. Smaller, 2 to 5 ft. high: leaves 1 to 1} inches long, silky beneath. 



DIVISION II. GAMOPETAL^E. 

 CAPRIFOLIACEJ!. 



1. Corolla regular, rotate: style short; stigmas 3 to Siftowen t* cymes. 



Shrub or tree: young stems thick, pith large: leaves pinnate , . . 1 



Slender shrub: leaves simple: fruit a drupe: seeds flat , 



$ 2. Corolla tubular and irregular or campanula^: stigma 1, capitate. 

 A creeping herb with pendulous flowers in pairs. 8 



