SAXIFRAGE FAMILY. 167 



6. HEUCHERA, ALUM ROOT, the rootstock being astringent. 

 (Named for a German botanist, J. H. Heucher.) Wild plants of 

 rocky woods ; the leaves rounded heart-shaped, and more or less lobed 

 or cut, mostly from the rootstock, often one or two on the tall stalk of 

 the panicle. Flowers mostly greenish, in summer. 21 



* Flowers very small ; stamens and styles protruding. 



H. Americana, Linn. Common A. The only one N. and E. of Penn. 



(also S. to S. Car.); has scapes and loose panicle (2°-3° high) clammy- 

 glandular and often hairy ; leaves with rounded lobes, and greenish 

 flowers in early summer. 



H. vill6sa, Michx. From Md. to Ga. and W., along the upper coun- 

 try ; is lower, beset with soft, often rusty hairs ; has deeper-lobed leaves, 

 and very small white or whitish flowers, later in summer. 



« * Flowers larger (the calyx fully y long), in a narrotcer panicle, 

 greenish, with stamens little if at all protruding ; leaves round and 

 slightly b-9-lobed. 



H. hispida, Pursh. Mountains of Va. and N. C, W. Tall (scape 

 20-4"^ high), usually with spreading hairs ; stamens a little protruding. 



H. pub^Bcens, Pursh. Scapes (l°-3° high) and petioles roughish- 

 glandular rather than pubescent ; stamens shorter than the lobes of the 

 calyx. From Penn. S. 



7. DBUTZIA. (Named for Johann Deutz, a botanist of Amsterdam.) 

 Flowering shrubs, with numerous panicles of white or pinkish blos- 

 soms, in late spring and early summer; the lower side of the leaves, 

 the calyx, etc., beset with minute starry clusters of hairs or scurf. 



D. grdcilis, Sieb. & Zucc. The smaller species, is 2° high, with ovate- 

 lanceolate, sharply serrate leaves, bright green and smooth, and rather 

 small, snow-white flowers, earlier than the next; often forced in green- 

 houses ; filaments forked at the top. Japan. 



D. scabra, Thunb. (or I). crenXta and I). FoRxfjNEi). A tall shrub, 

 rough with the fine pubescence, with pale, ovate or oblong-ovate, minutely 

 crenate-serrate leaves, and rather dull white or pinki.sh blossoms in sum- 

 mer ; the filaments broadest upwards and with a blunt lobe on each side 

 just below the anther. China and Japan. 



8. HYDRANGEA. (Formed of Greek words, water and vase, in 

 reference to the shape of the capsule.) Flowers summer ; often sterile 

 and enlarged, and showy. (Lessons, Fig. 214.) 



* Leaves lobed. 



H. quercif61ia. Bartram. Oak-leaved H. Stout shrub, .3°-6° high, 



very leafy, downy, with oval, 5-lobed, large leaves, and cymes clustered in 



oblong panicle, with numerous sterile flowers. Wild from Ga. S., hardy 



N. in cult. -. .. 7 r J 



* * Leaves not lobed. 



+- White-tomentose beneath. 



id. radiata. Walt, (or H. m'vka), has ovate or somewhat heart- 

 shaped, jioiutfd leaves, very wliite-woolly beneath, but smootli and green 

 above ; tlie flat cyme with a fejv enlarged sterile flowers round the 

 margin. Wild from S. Car. S. and W., and cult. 



