2964 



RIBES 



RICINUS 



liiridum, Hook. f. & Thorn. Allied to R. alpinum. Unarmed shrub ; 

 branchlets glabrous, red: Ivs. 3-5-lobed, with obtusish lobes, gla- 

 brous or nearly so, glandular, to 2 in. broad: fls. dioecious, dark 

 purple, in upright racemes, the staminate 1-2 in. long, the pistillate 

 shorter: fr. black, glabrous. Himalayas, W. China. R. malva- 

 ceum, Smith (R. sanguineum malvaceum, Loud.). Allied to R. san- 

 guineum. Unarmed shrub: Ivs. rough above, grayish tomentose and 

 glandular beneath: fls. pink or purple, smaller, white-pubescent and 

 glandular; tube longer than the sepals: fr. viscid-pubescent. Calif. 

 R. Mdrshallii, Greene. Allied to R. Lobbii. Spiny shrub with 

 puberulent branchlets: Ivs. deeply cordate, 3-5-lobed, glabrous, 

 \-\Yi in. wide: fls. solitary, large, purplish; sepals Ji-Jiin. long; 

 stamens slightly longer; petals salmon-pink: fr. purplish black, 



rickly. Calif. R. Maximowlczii, Batal. Allied to R. alpinum. 

 hrub, to 10 ft.; branchlets pubescent: Ivs. slightly 3-5-lobed, 

 middle lobe much longer, or undivided and ovate, pubescent on 

 both sides, 1 l /r4 in. long: fls. dioecious, in upright racemes 1-2 in. 

 long: fr. glandular-hairy, red. N. W. China. R. Menziesii, 

 Pursh (R. subvestitum, Hook. & Arn.). Allied to R. Lobbii. Spiny 

 shrub, to 6 ft.; branchlets pubescent and bristly: Ivs. deeply 3-5- 

 lobed, pubescent and glandular beneath, 1-2 in. broad: fls. purple, 

 with white petals; stamens as long as the sepals, with ovate-lanceo- 

 late anthers: fr. glandular-bristly. Ore. to Calif. G.C. III. 45:242. 

 R.H. 1908, p. 31. R. Meyeri, Maxim. Allied to R. petrseum. 

 Unarmed shrub, to 10 ft.: Ivs. usually 5-lobed, with acutish lobes, 

 glabrous or glandular-hairy above, to 3}^ in. broad: racemes hori- 

 zontal, lax, to 2 in. long: fls. purplish, nearly sessile, small, with 

 upright sepals: fr. black, lustrous. Cent. Asia, W. China. Var. 

 turkestdnicum, Jancz. Lvs. obtusely lobed: racemes longer; fls. 

 blood-red. Turkestan. R. mogolldnicum, Greene=R. Wolfii. 

 R. molle, Howell, not Poepp.=R. montigenum. R. montigenum, 

 McClatchie (R. lacustre var. molle, Gray. R. lentum, Cov. & 

 Rose). Allied to R. lacustre. Sts. bristly: Ivs. pubescent and 

 glandular: racemes few-fld. : fr. red, glandular-bristly, edible. Wash, 

 to Mont., Idaho to New Mex. R. moupin6nse, Franch. Allied to 

 R. petrseum. Shrub, to 15 ft.: Ivs. 3-5-lobed, with acute or acumi- 

 nate lobes, sparingly glandular, otherwise glabrous, to 6 in. broad: 

 racemes pendulous, loose, 1K~5 in. long; fls. greenish tinged with 

 red, or red; sepals upright: fr. black, lustrous. W. China. R. 

 nevadense, Kellogg (R. sanguineum var. variegatum, Wats. R. 

 variegatum, A. Nelson). Allied to R. sanguineum. Unarmed shrub: 

 Ivs. thin, 3-5-lobed, sparingly pubescent or glabrous: fls. smaller, 

 rose-colored; sepals about twice as long as the tube; petals white: 

 fr. blue, glaucous. Ore., Calif., Nev. R. occidentale, Hook. & Arn. 

 (R. calif ornicum, Hook. & Arn.). Allied to R. Roezlii. Spiny shrub, 

 to 6 ft. : Ivs. usually 5-lobed, glabrous or nearly so, about 1 in. broad: 

 fls. green or purplish; calyx-tube about as long as broad; sepals 

 glabrous, except a tuft of hairs at the apex; stamens as long as 

 sepals: fr. prickly. Cent. Calif. R. orientale, Desf. Allied to R. 

 alpinum. Unarmed shrub, to 6 ft.: young growth glandular- viscid: 

 lys. lustrous above, pubescent beneath: fls. dioecious, greenish, 

 tinged with red, glandular, in upright racemes 1-2 in. long: fr. red, 

 pubescent. S. E. Eu., W. Asia. B.M. 1583 (as R. resinosum). 

 R. palousense, Elmer=R. cognatum. R. pulchellum, Turcz. 

 Allied to R. diacantha. Spiny shrub, to 6 ft., glabrous: Ivs. truncate 

 to subcordate, deeply 3-lobed, to 2 in. broad: fls. purplish, in 

 upright racemes, the staminate to 2 % in. long, the pistillate shorter: 

 fr. large, red, glabrous. N. China, Transbaikal. R. quercetdrum, 

 Greene. Spiny slender shrub, sometimes bristly: Ivs. 3-5-cleft, 

 finely pubescent or usually glabrous, J^-Jiin. long: fls. 2-3, pale 

 yellowish with short-cylindric tube; petals shorter than the sepals, 

 a little longer than the stamens: fr. smooth, purple. Cent. Calif, to 

 Low. Calif. R. resindsum, Pursh=R. orientale. R. robustum, 

 Jancz. (R. niveum x R. hirtellum). Intermediate between the 

 parents. Spiny vigorous shrub, only the stronger shoots bristly: fls. 

 white or pinkish, but sepals broader and shorter and filaments 

 shorter and less pubescent than in R. niveum: fr. black. Origin 

 unknown. R. Saundersii, Jancz. (R. hudsonianum x R. nigrum). 

 Intermediate between the parents: fls. pink, fading to whitish: fr. 

 black. Originated in Ottawa. R. stenocdrpum, Maxim. Allied to R. 

 alpestre. Spiny shrub, often bristly : Ivs. cordate, 3-5-lobed, glabrous 

 or pubescent, about 1 Hin. across: fls. 1-3, short-peduncled, reddish 

 or pale; calyx-tube campanulate, shorter than the reflexed sepals; 

 stamens scarcely longer than petals: fr. oblong, %-l in. long, 

 glabrous or hispid. N. W. China. R. subvestitum. Hook. & Arn.= 

 R. Menziesii. -R. succirubrum, Zabel (R. niveum x R. divarica- 

 tum). Intermediate between the parents. Lys. similar to those of 

 R. niveum: fls. pink or pinkish; stamens 1 Yi times as long as sepals: 

 fr. black, slightly pruinose. Originated at Gotha, Germany. R. 

 ttnue, Jancz. Allied to R. alpinum. Unarmed slender shrub: Ivs. 

 3-5-lobed, lobes acute, incisely dentate, the middle one longer, 

 glandular, to 1 J^ in. long: fls. reddish brown or greenish, dioecious, 

 m upright racemes: fr. red. Cent, and W. China, Himalayas. R. 

 trilobum, Mey.=R. Gayanum. R. urceolatum, Tausch (R. multi- 

 florum X R. petrseum). Intermediate between the parents. Fls. 

 reddish: fr. red. Origin unknown. R. utile, Jancz. (R. Cynosbati X R. 

 Grossulana). Intermediate between the parents. Lvs. similar to R. 

 Grossularia: fls. slightly pubescent; ovary glabrous: fr. purplish, 

 sometimes with a few spines. A more detailed description will be 

 found under the name of "Mountain" in G.F. 9:456. It origi- 

 nated with the Shakers of Lebanon, N. Y. R. variegatum, A. Nelson 

 =R. nevadense. R. viburnifolium. Gray. Evergreen, unarmed, 

 aromatically scented shrub, to 8 ft.: branchlets glandular: Ivs. 

 ovate or oval, obtuse, coarsely toothed, glossy above, resinous- 

 dotted beneath, %-\% in. long: fls. dark pink, in upright racemes- 

 fr. ovoid, red. Low. Calif., Santa Catalina Isl. B.M. 8094. R. 

 villosum, Gay, not Nutt.=R. Gayanum. R. Vilmdrinii, Jancz. 

 Allied to R. alpinum. Unarmed shrub, to 6 t. : Ivs. 3-5-lobed with 

 obtuse or acutish lobes, glandular above, about 1 in. broad: fls. 

 dioecious in short upright racemes, greenish or tinged reddish brown: 

 fr. small, black, glabrous or glandular. W. China. R. Warsce- 



ivizcii, Jancz. Allied to R. rubrum. Unarmed shrub, to 6 ft.: Ivs. 

 slightly 3-Wobed, slightly pubescent below, to 4 in. broad: fls. 

 larger, pinkish, in pendent racemes 2 in. long: fr. larger, purplish 

 black, very acid. E. Siberia. R. Watsonianum, Koehne (R. 

 ambiguum, Wats., not Maxim.). Allied to R. pinetorum. Spiny 

 shrub, upright or ascending: branches glandular, not bristly: Ivs 

 deeply 3-5-lobed, sparingly pubescent on the veins, 1-2 in. broad: 

 fls. pinkish, pubescent; petals white, one-fourth shorter than sepals; 

 stamens as long as petals: fr. greenish, prickly. Wash. R. Wolfii, 

 Rothr. (R. mogollonicum, Greene). Allied to R. sanguineum. 

 Unarmed shrub, to 10 ft. : lys. 3-5-lobed, pubescent on the veins and 

 glandular beneath, 2-3 Yi in. broad: fls. greenish white, in upright 

 long-stalked racemes, 1-1 H in. long: fr. black, bloomy, glandular- 

 bristly. Colo., Utah, New Mex., Ariz. B.M. 8120. R. wollense, 

 Bean=R. Culverwellii var. wollense. ALFRED REHDER. 



RICCIA (P. F. Ricci, Italian nobleman, patron of the 

 botanist Micheli). Ricciacese. Riccia fluitans, Linn., is 

 one of the few flowerless or cryptogamous plants in culti- 

 vation aside from the ferns, mushrooms and selaginellas. 

 It has been listed by one specialist in aquatics presum- 

 ably for the benefit of students of botany. It is not gen- 

 erally advertised among aquarium plants. The form 

 used in aquaria is the floating sterile state; the fruiting 

 state (R. canaliculata, Hoffm.) grows on the ground in 

 muddy places. In this family of plants the plant-body 

 is a tnallus (i. e., a green, flattish body not differenti- 

 ated into root, stem and leaves). The thallus of Riccia 

 spreads out in green patches which are at first radiately 

 divided, and the center of the plant often decays 

 quickly. R. fluitans is distinguished from other species 

 by the linear dichotomous thallus, with the capsule 

 protuberant from the lower surface. 



RICCIOCARPUS (Riccia-fruited). Ricciacese. The 

 single formerly recognized species of this genus, R. 

 natans, Corda, is offered abroad as an aquarium plant. 

 It is a small floating plant, consisting of a single spatu- 

 late frond about J^in. or less long, more or less cleft or 

 cordate at the larger end or dichotomously branched, 

 from the under side of which many root-like bodies are 

 emitted. It is widely distributed over the earth. From 

 Riccia, the plant is distinguished by technical charac- 

 ters of archegonia and antheridia, and it has been 

 united with that genus by some authors. A second 

 species has recently been added to the genus, R. 

 velutinus, Steph., from W. Amer.; it appears not to 

 have been listed for cultivators. 



RICE: Oryza. R. Flower: Pimelia. R., Mountain: Oryzopsis. 

 R. Paper: The Chinense rice paper is made from Fatsia japonica, 

 which see. 



RICHARDIA: Zantedeschia. 



RICINOCARPOS (from Ricinus and Greek for fruit). 

 Euphorbiacese. Tropical shrubs sometimes cult, for 

 ornament; glabrous to stellate-tomentose, often heath- 

 like: Ivs. alternate, simple, entire, linear to lanceolate; 

 stipules none: fls. small, solitary or clustered, rarely 

 apetalous; calyx imbricate; stamens numerous; ovules 

 1 in each cell. Fifteen species of Austral. R. pinifolius, 

 Desf., NATIVE JASMINE, glabrous, Ivs. linear; and R. 

 speciosus, Muell. Arg., tomentose, Ivs. oblong, have 

 occasionally been cult. j 3 g . NORTON. 



RICINODENDRON (from Ricinus and Greek for 

 tree). Euphorbiacese. Tropical trees with economic uses, 

 but rarely cult.: juice milky: Ivs. alternate, long- 

 petioled, palmately 3-9-foliate, stipulate: fls. small, in 

 loose panicles; calyx imbricate; petals connate or free; 

 stamens numerous, filaments free; ovules 1 in each cell. 

 Three or four species in Afr. R. Heudelotii, Pierre, is a 

 prominent plant hi W. Afr. j g g NORTON. 



RICINUS (the name in classical languages applied 

 to the castor bean seed and to a similar tick). Euphor- 

 biacese. Plants cultivated for the oil of the seed and as 

 tall annuals for the bold and ornamental foliage; useful 

 for screens. 



