360 THE CULTIVATED EVERGREENS 



FF. Under surface of leaves glabrous or tomentose. 

 G. Leaf tomentose beneath. 

 H. Base of leaves cuneate. 



I. Petioles and branchlets covered with 

 white or brownish woolly tomentum: 



leaves woolly-tomentose beneath . . . Rhododendron Smirnovii, 

 n. Petioles and branchlets glabrescent: [366 

 leaves beneath with close tomen- 

 tum Rhododetidron Metter- 



HH. Base of leaves rounded or slightly am-i- [nichii, 366 



culate; leaves with close tomentum 



beneath Rhododendron brachycnr- 



GG. Leaf glabrous beneath or with very close [pjim, 367 



and thin tomentum. 

 H. Leaves usually obtuse or obtusish at the 



ends, 3-5 inches long, glabrous Rhododendron cafaivbi- 



HH. Leaves acute at the ends, 4-10 inches [ense, 367 



long, thinly scurfy-tomentose, rarely 



glabrous Rhododendron maximnm, 



[368 



BERBERIDACE^. BARBERRY FAMILY 



BERBERIS, L. BARBERRY 



Evergreen or deciduous shrubs, rarely small trees, with spiny branches; 

 inner bark and wood yellow: leaves alternate, simple, entire or toothed; 

 those of the shoots usually changed to mostly 3-parted spines, the normal 

 leaves in clusters on short axillary spurs : flowers perfect, yellow, in elongated, 

 umbel-like or compound racemes, or solitary or fascicled; sepals petaloid, 

 with 2 or 3 bractlets at base; petals 6, often smaller than the sepals and 

 usually with 2 nectariferous glands inside at base; stamens 6, irritable; anthers 

 opening with 2 valves; ovary with 1 to many ovules; stigma sessile or on a 

 short style: fruit a 1- to several-seeded, red, bluish, or black berry. (Name 

 of Arabian origin.) — About 175 species chiefly in the temperate regions of 

 the northern hemisphere and in South America, few in North America, 

 Europe, and in the Mediterranean region. 



The three following closely related species are the hardiest of the taller 

 evergreen barberries in cultivation; in the neighborhood of Boston they are 

 tender and survive only the milder winters with little or no injury; usually 

 they are more or less killed back, even if protected. Berberis Sargentiana 

 is the handsomest in foliage but tenderer than the other two. 



B. Gagnepainii, Schneid. Evergreen shrub to 6 feet tall; branchlets 

 terete, slightly verruculose, yellowish-gray; spines slender, 3-parted, ^-^ 

 inch long: leaves narrow-lanceolate, 13^-4 inches long, sinuately spiny- 

 serrate, with revolute margin, light green beneath and indistinctly veined, 

 thinly coriaceous: flowers in fascicles of 3-10, about 



