Spirseacese. Rosacese. 
127 
Hybrid with the last?—Hills; western and south-western 
Switz., Schaffh. 4 . . . . Cerasus L. 622. 
7. Racemes short, erect, few- (3—12-) fid. Ls round-oval, 
slightly cordate.—Wooded mountain slopes; here and 
there (wanting in U. L.). 5 . . Mahaleb L. 623. 
— Racemes long, gen. drooping, many- (20—30-) fid. Ls 
elliptic, slightly acuminate.—b. petrcea Tausch. (Upper 
Wall.).—Damp woods, thickets; distrib. 5 Padus L. 624. 
OBS. P. Laurocerasus L. Cherry-laurel, has evergreen, leathery, shining 
Is and erect racemes, it is often cultivated in shrubberies near the lake of 
Geneva. 
30. Spirseacese. 
164. Spiraea. Spiraea. XII, 14, 22. XXII, 24. 
1. Shrubs with streaked, angular branches. Ls undiv., oval. 
FIs in corymbs.—Indicated as subspontaneous in Canton 
Neuchatel. 5 . t ulmifolia Scop. 625. 
— Herbaceous pis. Ls divided ..... 2 
2. Ls large, 2—3-pinnatisect. FIs gen. dioecious through 
suppression, in narrow spikes arranged in a panicle.— 
— Woods; gorges; distrib. 6 . . Aruncus L. 626. 
— Ls interrupted-pinnatisect. FIs hermaphrodite, in cymes 3 
3. Ls with 4—6 pairs of segments, the largest oval-oblong, 
double toothed, the terminal one confluent with the upper 
lateral ones and appearing palinatifid with 3—5 lobes, 
(Ls green underneath or gray- or white-tomentose.) 
Root-fibres not thickened.—Damp meadows, ditches; 
everywhere. 6 . . . . LMmaria L. 627. 
— Ls with 15—20 pairs of segments; the largest ones ob¬ 
long in contour, inciso-pinnatifid. Root-fibres thickened 
in tubercles.—Pasturages; not common (wanting in U. 
L. A.). 6.Filipendula L. 628. 
OBS. Numerous species are also cultivated in gardens and shrubberies; 
comp. C. Koch, Dendrologie. 
31. Rosaceae. 
165. Dryas. Dryas. XII, 21. 
1. Ls cordate-oblong, crenate, white-tomentose underneath.— 
Alp., subalp. and Jura. 6 . . octopetala L. 629. 
166. Geum. Avens. XII, 18. 
1. FIs erect. Pets yellow, spreading, not unguiculate. Fr.- 
head sessile.—Hedges and thickets; distrib. 6 
urbanum L. 630. 
