1530 



BHUS 



the most poisonous of the Sumachs. The name R. 

 Vernix, Linn., is used by some authors for this species 

 and by others for R. vernicifera; in order to avoid con- 

 fusion, it seems best to drop the name and to substitute 

 those proposed by DeCandolle. 



10. succedanea, Linn. LAC SUMACH. Plant 10-15 ft. 

 high: Ivs. shining above, whitened beneath; Ifts. 9-15: 

 fls. yellowish: fr. white, large. E.Asia. R.H. 1863, p. 

 130. Poisonous. 



11. t^phina, Linn. STAGHORN SUMACH. A densely 

 velvety-hairy species growing to a height of 30 ft. in 

 favorable ^situations. Lfts. 



many, oblong-lanceolate, ser- 

 rate: fls. in a dense, terminal 

 panicle: fr. red, with crimson 

 hairs. June, July. Eastern N. 

 Amer. S. S. 3: 102-3. - Var. 

 laciniata, Hort., in which the 

 Ifts. are deeply cut, is the 

 most distinct form. Fig. 2116. 

 Trained in tree form this spe- 

 cies is decided- 

 ly picturesque. 

 In mass - plant- 

 ing where 

 dense foliage is 



2117. Rhus 

 semialata, var. 

 Osbeckii (X Y S ). 



required it 

 should be cut 

 over occasional- 

 ly to provide young 

 vigorous shoots, 

 which produce the 

 largest leaves. Its 

 brilliant fall coloring 

 and 'the persistence 

 of [its crimson fruit- 

 clusters render this 

 plant of great value where a 

 warm color effect is desired. 

 It will grow in the driest soils. 

 Gn. 54, p. 505. 



12. pumila, Michx. A low, procumbent, villous pubes- 

 cent shrub, with 9-13 oblong coarsely serrate Ifts.: fls. 

 in nearly sessile thyrsoid panicles: fr. scarlet, globose, 

 tomentose. Mts., N. C. to Ga. G.P. 8:405. Poisonous. 



13. vernicifera, DC. VARNISH TREE. LACQUER TREE. 

 Tree-like, 20-30 ft. high : Ivs. ample; Ifts. 11-15, smooth 

 above, pubescent beneath, midrib more or less broadly 

 margined: young growth also pubescent. This is the 

 plant from which the Japanese obtain the lacquer for 

 the finely polished ware. It is poisonous, and it is said 

 that people have been poisoned by handling the articles 

 coated with the lacquer. Gn. 34, p. 158. Cult, in S. Calif. 



14. Coriaria, Linn. Height 15-20 ft. : Ivs. large, with 

 11-15 elliptical coarsely toothed Ifts.; petiole margined, 

 villous: fls. greenish, in a large, loose, terminal panicle: 

 fr. red. July. S. Eu. This is the Mediterranean spe- 

 cies, much used in that district for preparing the finer 

 grades of leather. 



15. copallina, Linn. BLACK SUMACH. SHINING SU- 

 MACH. A shrub or small tree, sometimes growing to 

 the height of 25 or 30 ft.: Ifts. numerous, entire or 

 sometimes indented or cut near the apex, smooth above, 

 usually pubescent beneath; shoots also tomentose; 

 midrib winged between the Ifts. : fls. small, greenish, 

 in dense panicles at the end of the branches : fr. 

 slightly flattened, hairy, crimson. July, Aug. Eastern 

 N. Amer. to the Great Plains; succeeds well in dry 

 soils. 8.8.3:107-8. -This beautiful Rhus is the latest 

 of our species to bloom. It makes a fine specimen plant 

 and is also useful in masses. 



A 



RIBES 



16. semialata, Murr. Plant 15-20 ft. high: Ifts. 9-13, 

 smooth above, brown-pubescent beneath ; petiole some- 

 what winged between the Ifts.: fls. small, in a large,- 

 many-branched panicle. July, Aug. Chinaand Himalaya 

 region. Var. Osbeckii, DC. (R. Osbeckii, Carr. ). Fig. 

 2117. Rachis strongly winged. Japan. More hardy than 

 the type and the only form in cult, in this country. 



RHYNCHOSPERMUM jasminoides, a fine shrub of 

 the dogbane family, is referred to Trachelospermum. 

 There is, however, a good botanical genus named Rhyn- 

 cospermum, but it belongs to the composite family. It 

 has only one species, JR. verticillatnm, a plant not in 

 cultivation. 



RHYNCH0STYLIS (Greek, beaked column). Orchi- 

 ddcece. This genus includes a few species closely re- 

 lated to Saccolabium and usually sold under that name. 

 Epiphytic herbs with monopodial stems and 2-ranked, 

 crowded, leathery or fleshy Ivs.: fls. in 

 dense racemes from the axils of the Ivs., 

 medium-sized; dorsal sepal and petals sub- 

 similar, lateral sepals broader, decurrent on 

 the foot of the column; labellum firmly 

 joined to the base of the column, obovate, 

 inflexed at the apex, not 3-lobed, spurred, 

 the spur straight or curved backwards. For 

 culture, see Saccolabium. 



retusa. Blume (Saccolabium guttatitm, 

 Lindl. S.prcemorsum,Liuu\l. 

 S. Rheedii, Wight. S. rein- 

 sum, Voigt. S.JBlumei, 

 Lindl.). Stem stout, with 

 channeled Ivs. 6-20 in. long: 

 fls. in dense, cylindrical ra- 

 cemes about as long as the 

 Ivs., % in. across, white, 

 blotched with pink or violet. 

 June, July. Trop. India 

 and Malay Islands. B.M. 

 4108. F.S. 7, p. 92; 14: 

 1463. 1464. B.R. 17:1443 (as 

 Sarcanthus guttatus). G.C. 

 1845:364; II. 1:219 and 23: 



573; III. 15:812. Gn. 31, p. 537. A.G. 20:317. S.H. 2, 

 p. 375. Several varieties are in the trade. Var. majus, 

 Hort. Larger in all its parts. I.H. 15:545. Gn. 31, p. 

 69; 36, p. 230 (all as Saccolabium Blumei, var. majus). 

 Var. Holdfordiana, Hort., an old form with large ra- 

 cemes of waxy white fls., spotted with crimson, the lip 

 being also crimson. Var. gigantea, Hort., very much 

 like the type. Var. Dayi and var. superba are offered. 



violacea, Reichb. f. (Saccolabium violdceum, Reichb. 

 f. ). Lvs. 10-12 in. long: racemes 1 ft. or more: fls. 

 1 in. across, white, spotted with pale mauve; labellum 

 dark violet. Jan. Philippines. B.R. 33:30. -The blos- 

 soms are said to have a disagreeable odor. Var. Harri- 

 sonianum, Hort. (Saccolabium ffarrisonianum, Hook.). 

 Lvs. distichous, oblong, obliquely bifid at the apex: ra- 

 ceme dense, cylindrical, pendulous: fls. white, fragrant; 

 sepals ovate-oblong, somewhat imrurved; petals nar- 

 rower, oblong-spatulate ; labellum oblong-obovate, with 

 a thick blunt apiculus, saccate toward the apex; spur 

 blunt; disk with a single thickened line. Malay Islands. 

 B.M. 5433. F.S. 23:2412. The racemes grow to a 

 length of 2 feet. HEINRICH HASSELBRING. 



RIBBON GRASS. Phalaris arundinacea, var. varie- 

 gata. 



RIBBON TREE. Plagianthus. 



RtBES (said to have come from the German riebs, a 

 vernacular name for currant). Saxifraff&cece. CURRANT 

 and GOOSEBERRY. Shrubs, often spiny and prickly, with 

 simple, alternate, palmately veined Ivs. : fls. 5-, rarely 

 4-parted, borne singly or in racemes; calyx-tube co- 

 herent with ovary; lobes commonly colored petals; 

 usually small, borne on throat of calyx, alternating 

 with stamens: fr. a berry, tipped with remains of 

 calyx. Fig. 2118. Largely North American, although 

 well represented in Europe, Asia and South America. 



