1534 



RIBES 



RICHARDIA 



eum, but less ornamental. Calif. Card, p. 480.— i?. Menziesii, 

 Pursh. Extremely priekly both in plant and fruit. Calif, and 

 Ore. B.R. 33:56.— /i. Missouriease, Hort.=R. Americanum.— i?. 

 Moyollonicum, Greene. Perhaps the western representative of 

 R. Americanum. New Mex.— .B. odordtum, Hort.=R. aureum. 

 — R. subvestitum. Hook. & Arn. Related to R. Menziesii : fr. 

 densely glandular-hispid. Coast Ranges of Calif.— iJ. viburni- 

 folium, Gray. Lvs. scarcely lobed, resinous-dotted with pecu- 

 liar pebbled, leathery appearance. Lower Calif.— i?. WatS07iid- 

 num, Koehne. The western representative of R. Cynosbatl. 

 Washington. Fred W. Cakd. 



2126. Ribes ccreum (X J 



EtCCIA (P. F. Ricci, Italian noblemau, patron of the 

 botanist Micheli). Riccidcew. Hiccia fluitans, Linn., 

 is one of tlie few flowerless or cryptogamous plants in 

 cultivation aside from thie ferns, mushrooms and se- 

 laginellas. It is cultivated by one specialist in aquatics 

 presumably for the benefit of students of botany. It is 

 not generally advertised among aquarium plants. In 

 this family of plants the plant-body is a thallus (i. e., a 

 green, flattisli body not differentiated 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, dichot- 

 omous, floating thallus, with the capsule protuberant 

 from the lower surface. For full description, see Gray's 

 Manual. 



RICE. See Orxjza. 



RICE FLOWER. Pimelia. 



RICE, MOUNTAIN. Oryzopsis. 



RICE PAPER. The Chinese rice paper is made from 

 Fatsia Japonica, which see. 



RICHARDIA (L. C. Richard, 1754-1821, French 

 botanist). Ar&cem. Calla Lily. Perennial herbs 

 with many long-petioled leaves from a thick rhizome: 

 peduncles appearing with the leaves: petioles spongy, 

 often bristly below ; blade sagittate or lanceolate, 

 the numei'ous primary and secondary nerves ex- 

 current: peduncle as long or longer than the leaves; 

 spathe large, open, with a flaring, pointed, recurved 

 tip: spadix staminate above and pistillate below (Fig. 

 2127). Differs from Peltandra in floral characters. So. 

 Africa. Species 10-12. See Gn. 46:446; R.B. 2.'i:13. 

 Engler, DC. Monogr. Phaner, vol. 2. The true Calla 

 is not of this genus; see Calla. For the Black Calla, 

 see Arum. 



When grown for the flowers only, Richardias may be 

 planted out permanently on a bench, using very rich 

 soil and giving an abundance of water while growing. 

 They may be kept growing continually or given a sea- 

 son of rest as desired. Plants in pots are usually 

 started late in summer from dry tubers. The species 

 having yellow and pink spathes seem to do best when 

 grown without a resting period. 



A. Leaves lanceolate. 

 R^hmanni, Engler. Pink or Rose Calla. Dwarf 

 perennial: lvs. lanceolate: spathes about 4 in. long, 

 erect, truinitct-shaped, with a caudate tip 1 inch long. 

 B.M. 74:{6.-In Natal the spathes are said to be dull 

 rose without, rose-purple within, with a dark crimson 

 blotch at the base inside. In cultivation the spathes are 

 white, with a faint rose tinge to the back and margins. 



aa. Leaves sagittate or cordate. 

 B. Foliage spotted. 

 albo-maculata, Hook. Spotted Calla. Fig. 2128. 

 Petioles short ; blade 12-18 in. long, white-spotted all 

 over, hastate, three to four times longer than broad, 

 acute, the basal lobes widely spreading, triangular, ob- 

 tuse or acute, 3-4 in. long: spathe trumpet-shaped, 4-5 

 in. long, 2 in. wide, dull creamy yellow with a blotch 

 of crimson at the base. B.M. 1540. I.H. 7:255. F.S. 

 21 :2258. - Will stand in the open 

 with good protection for the 

 roots. Not of much value ex- 

 cept in botanical collections. 



N61soni, Hort. Allied to R. 

 albo - tnaculata : very vigorous 

 and floriferous, reaching 3-4 ft., 

 the scape overtopping the foli- 

 age: lvs. sagittate, bright green, 

 sprinkled with pellucid dots or 

 spots, as in R. Elliottiatm : 

 spathe scarcely spreading, the 

 limb short, very pale yellow 

 with a purple blotch at the bot- 

 tom.— One of the most recent 

 species. 

 melanoleiica, Hook. f. Black- 

 throated Calla. Scape and petioles bristly below: 

 lvs. 6-12 in. long, hastate-ovate-acuminate, the basal 

 lobes obtuse, marked all over with oblong, white, trans- 

 lucent spots: spathe pale straw-colored, widely flaring 

 and open from the base, the margins and cuspidate tip 

 recurving, with an ample black-purple spot at the base 

 within. Natal, 18G8. B.M. 5765. 



EUiottiana, Knight (Calla Flliottidna, Hort.). Gol- 

 den Calla. Petiole mottled; blade light green, with a 

 few white or translucent spots, broadly sagittate, with 

 undulate margins, about as large as those of R. Afri- 

 cana : spathe a rich lustrous yellow, lasting about two 

 weeks, becoming greenish with age. Tuber proliferous. 

 S. Africa, 1890. Gn. 46:989. 



BB. Foliage without spots. 

 C. Base of the leaf-blade cordate. 

 Afric&na, Kunth {Calla ^thibpica, Linn. R. ^thio- 

 pica, Hort.). Common Calla. Lily-of-the-Nile. Fig 



2127. Common Calla Lily— Richardia Africana (X J^). 

 Left-hand specimen shows the spadix, the spathe being removed. 



