40 ENGLISH 
904 revoluble — rolling away, referring to an annulus that falls in a broken ring [f1104, g1126, ; 
905 eet: lled d 1 (abaxially) and backward, referring to a leaf margin (opposed K 
to involute) [f855, g1125, s998]. is 
906 rheophilous — thriving in running water, dwelling in flowing creeks [f856, g835, s989]. 
907 rhizautoicous — see autoicous [f857, g836, s1001]. 4 
908 peor ^ ees niano that function in absorption and anchorage; in liverworts and 
lly hyaline; in mosses usually brown to reddish, simple or zi 
branched, multicellular filaments, generally with oblique end-walls (see tomentum) ins. : 
g837, s1002 
909 rhizoid dice a cushion-like, multicellular disc at the base of an underleaf in leafy 
liverworts, from which rhizoids originate (cf. secondary rhizoid disc) [(301, g840, s351].- 
910 rhizoid furrow — a longitudinal, rhizoid bearing channel or groove on the 
(ontogenetically) postical surface of a gametangiophore; e.g. Marchantia [(907, g838, 
$161] 
911 rhizoid initial — rhizoid-g ting cell; such cells are usually smaller than neighboring - 
[(536, g839, s-]. É 
912 rhizome — a slender, horizontal, subterranean stem giving rise to erect secondary stems; L 
(also called subterranean stolon); e.g., Rhodobryum [f861, g841, s1005]. ? 
913 rhombic — diamond-shaped (in the traditional playing-card sense) [f862, g822, 842, s1007]. 
914 rhomboidal — oblong-hexagonal [f863, g843, s1008]. 
915 rimose (rimous) — with chinks or ino |[f865, £854, s999]. 
916 ringed — encircled; having a thicke g ding a pore; e.g., Sphagnum [f182, 
g147, s76]. 
917 riparian — growing by rivers and streams [f866, g1029, $1000]. 
918 robust — large, full [f867, g602, s1006]. 
919 rosette — a compact cluster of leaves encircling the stem; e.g., Rhodobryum; a gr owth 
habit with thalli radiating from a central point; e.g., Riccia, Ricciocarpos [f869, g856, 
s1009]. 
920 rostellate — with short beak [(870, 617, $1010]. 
921 rostrate — beaked, narrowed into a slender tip or point [f871, g389, s1011]. 
922 rostrum (pl. rostra) — beak [(872, 895, s1012]. : 
923 rosulate — collected into a rosette; e :£; with the habit of small apparently acaulescent — 
plants in which basal bracts grade continuously into about six, more or less uniform, 
broad spreading, vegetative leaves [f1106, 857, s1013]. 
rudimentary incompletely developed, vestigial (cf. reduced) [f875, g1063, s1015]. - 
925 rotund — rounded [f86 8, g863, 982]. 
926 rufescent —- — becoming reddish " g173, s1016]. 
927 rufous — reddish [f873, 350, s1017]. 
928 rugose — with 
$1018]. 
es scit With weak, transverse wrinkles [1878, 9908, s1019]. 
— growing on rock or rock walls (see saxicolous) [1879, 930, g874, s1020]. 
transverse wrinkles or undulations; e.g., leaves of Neckera [f877, g864, 
