870 FLORA. 



brown in drying ; drupe scarlet or red, 4-6 mm. in diameter ; nutlets minutely- 

 roughened. In rocky places, N. B. to Alaska, Br. Col., Ga., Colo, and Cal. Fruit 

 rarely white. April-May. 



Sambucus pubens dissdcta Britton. Leaflets laciniate. Lake Superior and Penn. 

 . Sambucus nlgra laciniata (Mill.) DC., a cut-leaved variety of the related European 

 species has been found at Cape May, N. J., perhaps escaped from cultivation. 



2. VIBURNUM L. 



Shrubs or trees, with entire dentate or lobed, sometimes stipulate leaves, an<l 

 white or rarely pink flowers in compound cymes, the outer flowers sometimes radiant 

 and neutral. Calyx-tube ovoid or turbinate, its limb short, 5 -toothed. Corolla ro- 

 tate or short-campanulate in our species, regular, 5 -lobed. Stamens 5, inserted on 

 the tube of the corolla; anthers oblong, exserted. Ovary i-3-celled; style short, 

 3-lobed or 3 -parted ; ovules solitary in each cavity, pendulous. Drupe ovoid or 

 globose, sometimes flattened, i-seeded. Seed compressed; endosperm fleshy; em- 

 bryo minute. [The ancient Latin name.] About 100 species, of wide distribution. 

 Besides the following, about 5 others occur in southern and western N. Am. 



* Outer flowers of the cyme large, radiant; drupe red. 



Leaves doubly serrate, pinnately veined. i. V. alnifolium. 



Leaves 3-lobed, palmately veined. 2. V. Opulus. 



* * None of the flowers radiant; drupe blue or black (red in No. 3). 



1. Leaves palmately veined, or 3-ribbed. 



Cymes 1-2.5 cm - broad, the rays short; drupe red. 3. V. pauciflorum. 



Cymes 3.5-6 cm. broad, the rays slender; drupe nearly black. 4. V. acerifolium. 



2. Leaves pinnately veined. 



a. Leaves coarsly dentate, the veins prominent beneath. 



Leaves very short-petioled, pubescent. 5. V. pubescens. 



Petioles 0.6-4 cm. long. 



Leaves glabrous, or with tufts of hairs in the axils beneath. 6. V. dentatum. 

 Leaves pubescent beneath, the pubescence more or less stellate. 

 Drupe globose-ovoid; eastern and southern. 



Veins of leaves not very prominent. 7. V. semitomentostnn. 



Veins very prominent on the under surfaces of the leaves. 



8. V. venosutn. 

 Drupe oblong, twice as long as thick; western. 9. V> molle. 



b. Leaves entire, crenulate, or serrulate, the veins not prominent. 

 Cymes manifestly peduncled. 



Peduncle shorter than the cyme ; leaves crenulate. 10. V. cassinoides. 



Peduncle equalling or longer than the cyme. li. V. nudum. 



Cymes sessile, or nearly so. 



Leaves slender-petioled, large. 



Leaves prominently acuminate. 12.' V, Lentago. 



Leaves obtuse, or merely acute. 



Leaves and scarcely winged petioles glabrous, or nearly so. 



13. V.prunifolium. 

 Veins of lower leaf-surfaces and winged petioles tomentose. 



14. V. rufotomentosum. 

 Leaves nearly sessile, obovate, small. 15. V. obovatum 



1. Viburnum alnifolium Marsh. HOBBLE-BUSH. AMERICAN WARFARING 

 TREE. (I. F. f. 3434.) A shrub, with smooth purplish bark, widely and irregu- 

 larly branching, the branches often procumbent, the youngest twigs scurfy. Leaves 

 orbicular, or very broadly ovate, short- acuminate or acute, usually cordate, finely 

 stellate-pubescent, or at length glabrous above, scurfy with stellate pubescence on 

 the veins beneath, finely serrate all around, 0.7-2 dm. broad, petioles 1-3 cm. long; 

 cymes sessile, 7-13 cm. broad, the exterior flowers usually about 2 cm. broad; 

 drupes red, becoming purple, ovoid-oblong, 10-12 mm. long; stone 3 -grooved on one 

 side, i -grooved on the other. In low woods, N. B. to N. Car., western N. Y. and 

 Mich. Leaves of shoots from cut stumps thin, ovate, coarsely toothed. May-June. 



2. Viburnum Opulus L. CRANBERRY-TREE. WILD GUELDER-ROSE. 

 HIGH BUSH CRANBERRY. (I. F. f. 3435.) A shrub sometimes 4 m. high, with 

 smooth branches. Leaves broadly ovate, sometimes broader than long, glabrous, 

 or with scattered hairs above, more or less pubescent on the veins beneath, rather 

 deeply 3-lobed, rounded or truncate and 3-ribbed at the base, the lobes acuminate, 

 coarsely dentate; petioles 1-2.5 cm - Ion g; cymes peduncled, 7-10 cm. in diameter, 



