540 
RAPHIA 
enclosed in large sheathing scales. In R. Ruffia Mart, roots are 
developed between the dead leaf-bases ; they curve upwards and are 
said to act as respiratory organs. 
Ratonia DC. ( Matayba Aubl.). Sapindaceae (i). 36 sp. trop. and 
subtrop. Am. 
Ravenala Adans. Musaceae. 2 sp. Madag. and S. Am. They have 
a true sub-aerial stem, which bears large leaves in 2 -ranked phyllo- 
taxy, giving the plant a peculiar fan-like appearance. R. guyanensis 
Steud. is the only Am. sp. of the suborder Mitseae. R. madagasca - 
rieiisis J. F. Gmel. is the traveller’s tree, so-called because the water 
that accumulates in the leaf-bases has been used for drinking in cases 
of necessity. 
Reaumuria Linn. Tamaricaceae. 13 sp. E. Medit., Cent. As. Halo- 
phytes (p. 169). [See Volkens Flora d. aegyptisch-arabische Wuste.\ 
Reineckia Kunth. Liliaceae (vii). 1 sp. China, Japan. 
Reinwardtia Dum. Linaceae. 1 sp. N. India. 
Relhania L’Herit. Compositae (iv). 18 sp. S. Afr. 
Remusatia Schott. Araceae (vi). 2 sp. E. Ind., Java. R. vivipara 
Schott has a tuberous stem which gives off upright shoots bearing 
scale-leaves : in their axils are little tubers, each of which is provided 
with a terminal hook by which it may be carried away by an animal. 
Renanthera Lour. Orchidaceae (31). 12 sp. Malaya, Cochin China. 
Climbers. 
Renealmia Linn. f. Zingiberaceae. 15 sp. trop. Am., W. Afr. 
Reseda Tourn. ex Linn. Resedaceae. 53 sp. Medit., Eur. ; R. lutea 
L. and R. Luteola L. in Brit. R. odorata L. is the garden migno- 
nette. There is a large posterior disc. The ovary and fruit are open 
at the apex. R. lutea is the dyer’s weld; it yields a yellow dye. 
Resedaceae. Dicotyledons (Archichl. Rhoeadales). 6 gen. with 45 
sp. chiefly Medit., also in Eur., As., S. Afr., Calif. Most are xero- 
phytic herbs with alt. stip. leaves and racemes of zygomorphic $ firs., 
with bracts but without bracteoles. The axis developes posteriorly 
into a large disc, and upon this side the petals &c. are usually better 
developed than upon the anterior side of the flr. K 4 — 8 ; C o — 8 ; 
A 3 — 40 ; G (2 — 6) or 2 — 6, in the former case i-loc. with parietal 
placentae. Ovary open at the top; ovules 1 — 00 per cpl., anatropous. 
Fruit capsular; embryo curved; no endosperm. Chief genera: 
Reseda, Oligomeris. Placed in Parietales by Benth. -Hooker, in 
Cistiflorae by Warming. 
Restiaceae (Benth. -Hooker) = Restionaceae. 
Restio Linn. Restionaceae. 100 sp. S. Afr., Austr. R . tetraphyllus 
Labill. is often grown in botanic gardens. Assimilation is performed 
by the green stems, the leaves being reduced to sheaths. 
Restionaceae. Monocotyledons (Farinosae). 19 gen. with about 250 
sp., mostly in S. Afr. and Austr., a few in N. Z., Chili and Cochin 
China. Xerophytes (p. 163), usually of tufted growth, with the general 
