Genus 3. 



ROSE FAMILY. 



247 



3. ARUNCUS [L.] Adans. Fam. Tl. 2: 295. 1763. 



Tall perennial herbs, with large 2-3-pinnaie leaves, stipules minute or wanting, and very 

 numerous white dioecious flowers in panicled spikes. Calyx mostly 5-lobed. Petals as many 

 as the calyx-lobes. Stamens numerous, inserted on the calyx; filaments filiform. Pistils 

 usually 3, alternate with the calyx-lobes. Follicles glabrous, at length reflexed, usually 

 2-seeded. Seeds minute, not shining. [Greek, goat's-beard.] 



About 3 species, the following typical one widely dis- 

 tributed in the north temperate zone, one in northwest- 

 ern America, the other Jajjanese. 



I. Aruncus Ariincus (L.) Karst. 

 beard. Fig. 2221. 



Spiraea Arniicus L. Sp. PI. 490. 1753. 

 Aninctis Sylvester Kosteh Ind. Hort. Prag 



only. 1844. 

 Aruncus Aruncus Karst. Deutsch. Fl. 779. 



Goat's- 



15. Name 

 1880-83. 



Glabrous or pubescent ; stem erect, somewhat 

 branched, i-7 '"gli- Leaves long-petioled, the 

 lower 1 long or more, pinnate, 3-7-foliolate ; leaflets 

 ovate, lanceolate or oval, thin, stalked or sessile, 

 acuminate or acute at the apex, rounded, slightly 

 cordate or sometimes narrowed at the base, sharply 

 doubly serrate or incised, 1-3' long; spikes slender, 

 elongated, erect or spreading; flowers i"-2" wide; 

 follicles short. 



In rich woods, mountains of Pennsylvania to Iowa, 

 south to Georgia and Missouri, and in northern Europe 

 and Asia. Consists of several races, differing in pubes- 

 cence and slightly in the size and shape of the fruit. 

 Ascends to 4200 ft. in North Carolina. May-July. 



4. SCHIZONOTUS Lindl. Introd. Nat. Syst. 81. 1830. 



Shrubs, with odd-pinnate leaves, the large stipules conspicuous. Flowers perfect, in 

 terminal panicles. Calyx-tube hemispheric, its 5 lobes imbricated, early reflexed. Petals 5, 

 imbricated. Stamens numerous, borne on the margin of the disk. Pistils mostly S, opposite 

 the calyx-lobes, connate below; styles terminal or nearly so; ovules several, pendulous. 

 Follicles thin, dehiscent along both sutures. Seeds few, with endosperm. [Greek, referring 

 to the pinnately compound leaves.] 



About 3 species, natives of Asia, the following typical. 



I. -Schizonotus sorbifolius (L.) Lindl. 

 Sorb-leaved Schizonotu.s. Fig. 2222. 



Spiraea sorbifolia L. Sp. PI. 490. 1753. 



Schizoiwtns sorbifolius Lindl. ; Steud. Nomencl. 

 Ed. 2, 2: 531. 1841. 



Sorbaria sorbifolia A. Braun ; Aschers. Fl. Brand. 

 177. 1864. 



Stems 6 high, or less, little branched. Leaf- 

 lets 13-21, lanceolate, acuminate, finely double- 

 serrate, glabrous or luore or less stellate- 

 puberulent; panicle often 1 long, densely 

 very many-flowered ; calyx-lobes ovate ; petals 

 white, obovate, about l?;" long; filaments about 

 twice as long as the petals; follicles oblong, 

 pilose ; styles recurved. 



Locally spontaneous after cultivation. Ontario 

 to New York and Maryland. Native of northern 

 Asia. Summer. 



