1222 



SPIRiEA* chamsedrifdlia. 

 Germmider-leaved Spiroia. 



ICOSANDRIA PENTAGYNIA. 



Nat. ord. Rosace^e. 



SPIRJEA L. — Calyx 5-fidus, persistens. Stamina 10-50, cum petalis 

 toio calyce adhserente inserta. Carpella 1-00 distincta, rar6 basi coalita, 

 breve apiculata, sessilia, raro stipitata. Semina 2-6, suturse internee affixa, 



exalbuminosa. Embryo inversus, cotyledonibus crassiusculis. Frutices 



inermes, v. herbae perennantes. Rami alterni. Folia alterna, simplicia, 

 raro decomposito-pinnatisecta, nervis pinnatis v. ternato-palmatis. Flores 

 albi V. ruhicundi, nimquam fiavi. Decand, prodr. 2. 541. 



§ Chamcedryon. Ovaria libera. Torus apice liberus, basi tubo 



calycino concretus. Carpella non inflata. Frutices. Flores her- 



maphroditi umbellati v. subcorymbosi, pedicellis indivisis unifloris. 



Folia integra v. dentata exstipulata. Dec. I. c. 



S. chamcBdrifolia ; tbliis ovatis acuminatis inciso-serratis glabris, ramis angu- 



latis flexuosis, corymbis terminalibus hemisphaericis. 

 Spiraea chamaedryos foliis. Ammann stirp. rar. 190. 

 S. chamaedrifolia. Linn. sp. pi. I. 701. n. 9. Pall. ross. t. 15. fol. ad 



basin sinistr. 

 ? S. chamaedrifolia «. Cambessedes mon. p. 362. 



S. ulmifolia. Scopoli carniol. 1. p. 349. t. 22. Willd. sp. v. 2. p. 1154. 

 Dec. prodr. 2. 542. 



Frutex humancB altitudinis, erectus, ramosus, ramis cinereis, junioribus 

 fiexuosis angulatis. Folia ovata, acuminata, inciso-serrata, glabra, Ubni 

 campestris magnitudine , petiolis pilosis. Corymbi terminales, pedunculati, 

 hemisphcerici, subracemosi. Flores albi, mujusculi. 



The genus Spiraea has been excellently remodelled by 

 M. Cambessedes, in a valuable paper published in the 

 Annates des Sciences Naturelles : but a great deal of con- 



* According to Sprengel, the e-Tru^ecix of Theophrastus was the modern 

 Spiraea salicifolia. It seems to have derived its name from a-^it^derj, to 

 become spiral, in allusion to the fitness of the plant for twisting into 

 garlands, &c. 



