RHODORHIZA 



RHCEO 



2040 



The wood of this species is hard and white, with 

 radiating stripes. Intro, into S. Calif . 



WILHELM MILLER. 

 F. TRACT HuBBARD.f 



RHODOSPATHA (Greek, rose and spathe, referring 

 to the color of the spathe in some species). Aracex. 

 Climbing shrubs suitable for the warmhouse: branches 

 often rooting: Ivs. distichous, elliptic-oblong, acumi- 

 nate: spathe cymbiform, beaked and deciduous; spadix 

 shorter than the spathe, cylindrical, densely fld., 

 the fls. all perfect or the lower pistillate; perianth none, 

 stamens 4: berries small, oblong, truncate, 2-celled, 

 many-seeded. About a score species, Trop. Amer. See 

 Engfer, Pfknzenreich, IV. 23B. 



Forgetii, X. E. Br. St. climbing: Ivs. spreading; blade 

 oblong-lanceolate, 16-20 in. long; the petiole about 12 

 in. long: peduncle 6 in. long; the spathe broadly elliptic, 

 6 in. long, a dirty pale rose-white outside and dirty rose 

 inside. Costa Rica. 



pictum, Nichols. (Spathiphyttum pictum, Hort. land.). 

 Lvs. somewhat fleshy, broadly ovate-elliptic, 1^ ft. or 

 more long, glossy dark green, mottled along the trans- 

 verse veins with blotches of golden green. S. Amer. 



RHODOSPaERA (Greek, red and globe; referring to 

 the reddish globose fr.). Anacardiaceae. A tree from 

 Austral., closely related to Rhus but differing chiefly 

 in the 10 stamens and in the very short free radicle 

 of the embryo: Ivs. odd-pinnate, subcoriaceous: fls. 

 polygamo-dio?cious, in terminal and axillary panicles, 

 red; stamens 10; styles 3, free: fr. a globose drupe. In 

 its native country the wood is esteemed for cabinet- 

 work and used as a yellow dye and therefore called 

 "yellow-wood." It is also a handsome foliage tree and is 

 cult, in Calif. The only species is R. rhodanthema, 

 Engl. (Rhus rhodanthema, F. Muell.). Evergreen tree 

 to 60 or 70 ft., glabrous: Ifts. 7-9, short-stalked, oblong- 

 ovate, obtusely short-acuminate, dark green and lus- 

 trous above, lighter beneath, with tufts of hairs in the 

 axils of the veins, 2-2% in. long: panicles to 4 in. long; 

 fls. small, 3e m - across, crimson or pink: fr. globose, 

 reddish brown, ^iin. across. Queensland and New S. 

 Wales. Maiden, Forest Fl. New S. Wales. 1:32. 



ALFRED REHDER. 



RHODOSTACHYS (Greek, rose and flower-spike, 

 alluding to the rose-colored fls. of some species). Bro- 

 meliacese. Herbs suitable for the warmhouse: Ivs. rosu- 

 late, long, linear, rather stiff and spinulose-serrate : 

 heads terminal, sessile within an involucre of numerous 

 floral Ivs.; fls. subsessile on a hemispherical or short- 

 conical receptacle; sepals erect and strongly imbricated; 

 petals free, imbricated; stamens free; ovary inferior. 

 About 6 or 7 species, S. Amer. R. andina, Phil., is a low 

 subacaulescent plant: Ivs. linear, about 1 ft. long and 1 

 in. broad, aculeate-margined, glabrous: spike almost 

 globose with scarious bracts about equaling the fls.; 

 fls. rose; calyx-lobe lanceolate, strongly acuminate; 

 petals nearly 1 in. long, linear-lanceolate, strongly 

 acuminate. "Chile. B.M. 7148. G.W. 3, p. 286. R. 

 pitcairniifblia, Benth. & Hook. f. (Fasciculdria pit- 

 cairniifdlia, Mez). Sts. short, with some short branches 

 at the top: Ivs. many, crowded, ensiform from an ovate 

 triangular base, about 1 ft. long and 1 in. wide, margins 

 with short antrorse spines; the innermost Ivs. bright red 

 at their base: fls. in a dense central, sessile head, about 2 

 in. diam.; sepals narrowly lanceolate-acuminate; petals 

 blue, oblong, obtuse, erect; ovary oblong, plano-convex. 

 Chile. B.M. 8087. F . TRACY HUBBAKD. 



RHODOSTOMA (Greek, rose and mouth). Rubiacex. 

 Closely allied to Psychotria. R. gardenioides, Scheidw., 

 a pknt 2 ft. high, with opposite obovate-lanceolate 

 dark green Ivs. and white fls. in terminal cymes, from 



5. Amer., has previously been sparingly in cult. H.U. 



6, p. 225. A warmhouse plant. The genus Rhodo- 



stoma is now referred to Palicourea and this species 

 becomes P. gardenioides, Benth. & Hook. 



RHODOTHAMNUS (Greek, rhodon, rose, and tham- 

 nos, shrub; alluding to the rose-colored fls.). Ericaceae. 

 Dwarf evergreen shrub, with alternate small entire Ivs. 

 and rather large pink fls., usually solitary at the ends of 

 the branchlets. Related to Kalmia, but anthers not in 

 pouches: Ivs. alternate: sepals 5, half as long as corolla; 

 corolla rotate, deeply 5-lobed; stamens 10, slightly 

 longer than corolla: fr. a 5-celled, many-seeded dehis- 

 cent caps. Charming little alpine shrub, hardy N., but 

 somewhat difficult to cult. It thrives best in peaty 

 porous soil of constant, moderate moisture in a partly 

 shaded situation, and is best suited for rockeries. Prop, 

 by seeds or layers, also by cuttings of ripened wood 

 under glass. The only species is R. Chamaecisrus, 

 Reichb. (Rhododendron Chamaedstus, Linn. Adoden- 

 dron Chamaecistus, Kuntze). Diffusely branched shrub, 

 to 1 ft.: Ivs. cuneate-oblong, acute, setosely ciliate, 

 J^-^in. long: fls. on slender, glandular-hirsute pedicels, 

 solitary, rarely 2 or 3 at the end of the branchlets, light 

 purplish pink, to 1 in. across. May. Alps of E. Eu. 

 B.M. 488. L.B.C. 15:1491. P.M. 3:169. F.S. 19:1962. 

 F.W. 1873:321. G.C. III. 33:293. ALFRED REHDER. 



RHODOTYPOS (Greek, rhodon, rose, and typos, 

 type] alluding to the resemblance of the flowers to those 

 of a single rose). Rosaceae. Ornamental shrub, grown 



chiefly for its large 

 white flowers and 

 for the handsome 

 bright green foliage. 

 Leaves deciduous, 

 opposite, stipulate, 

 short-petioled, ser- 

 rate: fls. solitary, 

 short - pedicelled; 

 sepals large, half as 

 long as petals, out- 

 side with 4 small 

 alternate bracts; 

 petals 4, orbicular; 

 stamens numerous; 

 carpels usually 4, 

 developing into 

 black dry 1-seeded 

 drupes, surrounded 

 by the large persist- 

 ent calyx. One 

 species in Japan. A 

 handsome and dis- 

 tinct shrub, hardy 

 as far north as 

 Mass., with bright 

 green foliage, con- 

 spicuous by its 

 white fls. in spring 



3394. Rhodotypos kerrioides. 



and by its shining 

 black fr. in autumn 



and winter. It thrives well in any good soil. Prop. by. 

 seeds and by greenwood cuttings under glass early in 

 summer; also by hardwood cuttings. 



kerrioides, Sieb. & Zucc. (R. tetrapetala, Makino). 

 Fig. 3394. Much-branched, spreading shrub, usually 

 3-6 ft. high (in Japan 15 ft.): Ivs. ovate to ovate- 

 oblong, acuminate, sharply and doubly serrate, silky- 

 pubescent beneath when young, lJ^-3 in. long: fls. 

 pure white, 1% in. across. May, June. S.Z. 1:99. 

 B.M. 5805. L.I. 14. Gt. 15:505. R.H. 1866, p. 430. 

 Gn. 6, p. 229; 34, p. 159; 43, p. 138. G. 7:18; 10:615. 



ALFRED REHDER. 



RHCEO (name unexplained). Commelindceae. One 

 species, from Mex. and the W. Indies, R. discolor, 

 Hance, known also as Tradescantia discolor, L'Her., 



