Ehus 



( 274) 



Rhynchoglossum 



RHUS. (SUMACH.) 



Description. A large genus of stove, greenhouse, 

 or hardy trees or shrubs (ord. Anacardiaceas), 

 generally of an ornamental character, though with 

 small flowers. A few are valued for their products, 

 as Coriaria for yielding the Sumach or Shuinac, 

 and Cotinus for the yellow dyewood Young Fustic. 

 Copallina produces a resin made into varnishes. 

 Many species are poisonous, particularly the 

 American Toxicodendron, the Poison Oak. Vene- 

 nata is equally poisonous when touched. The 

 most useful for the garden or shrubbery are the 

 hardy species, and among these Cotinus, the 

 Smoke Plant, may be mentioned as of pretty 

 appearance after flowering. Cotinoides, Cotinus, 

 and typhinus give fine autumnal tints. Typhina 

 may be treated like Paulownia imperialis, its 

 autumnal leaves and fruits being showy. 



Propagation. The hardy species by cuttings 

 and layers, and some by root cuttings. The tender 

 species by cuttings. 



SoiL Common soil. 



Principal Species and Varieties : 

 aromatica, 8', Ap., hdy., atropurpurea, deeper 



yel. (syns. canadensis 



and suaveoleus). 

 copallina, 1' to 7', Jy., 



hdy., grn., yel. 

 Coriaria, 15' to 20', Jy., 



hdy., greenish wh. 

 cotinoides, 6' to 20', Ap., 



hdy. (syn. Cotinus 



araericanus). 

 Cotiuus, 6' to 8', Je., 



hdy., pale pur. (xyn. 



Cotinus Coccygea). 



Smoke Plant. 



foliage and seed plumes. 

 pendula,droopinghabit. 

 diversiloba (see Toxico- 



dendrou). 

 glabra, 5' to 18', Je., hdy., 



yel., greenish red (syiis. 



caroliniana, coccinea, 



elegans, anil sanguiuea) . 

 lacmiata, cut foliage, 

 lucida, 4' to 6', Jy., grh., 



wh. 

 Michauxii, 2' to 3', sum., 



hdv. 



Osbeckii, 20', Jy., grh. 

 (/.' semialata Os- 

 beckii). 



succedauea, 10' to 15', 

 Je., grh ., greenish yel. 

 (V/w. Toxicodeudrou 

 altissimum) . Red Lac 

 Sumach. 



Toxicodeudrou, Je., hdy. 

 cl. , greenish yel. (xynx. 

 ambigua,diversifolia ja- 

 ppnica, Ainpelopsis Hog- 

 gii Japanese forms 

 etc.). Poison Oak or Ivy. 



radicans, trailer (syn. 

 radicans) . 



trichocarpa, 25', sum., 

 hdy. 



typhina, 10' to 30', Je., 

 hdy., greenish yel. 



(fit/it-^, americana, caiia- 

 deusis of gardens, not 

 of Michaux, frutescens, 

 etc. ; sec figure). Stag's 

 Horn Sumach, Vinegar 

 Tree. 



arborescens, 10' to 25'. 



frutescens, 2' to 10'. 



veneuata, 6' to 18', Jy., 

 hdy., grn. (xi/itx. vernix 

 of Liirmuus and Toxico- 

 dendrou pinnatiim) . 

 Poison Elder, Swamp 

 Sumach. 



vernicifera, 30', Je., grh., 

 greenish yel. Japan 

 Lacquer or Varnish 

 Tree. 



villosa, Jy. , grh. , greenish 

 yel. 



RHYNCHANTHUS. 



Tuberous-rooted stove perennials (ord. Scita- 

 minea;), requiring considerable atmospheric moist ure 

 in summer. Propagation, by division. Soil, rich, 

 fibrous loam. 



Principal Species : 



longinorOB, 1-J-', Jy., greenish yd. 



RHYNCHITES. 



A genus of weevils injurious to trees. Shaking 

 the branches and holding a sheet to catch the 

 insects is the best remedy. 



RHYNCHOGLOSSUM (syns. ANTOM A, 



LOXOTIS, KHINCHOGLOSSUM). 

 Greenhouse biennials (ord. Gesneracejc). Prop- 

 agation, by seeds sown in heat in spring, and 



Photo; Caeacil & Company, Ltd. 



RlIUS TYPHINA. 



