Lii 



GLOSSARY. 



. and directed Rudiment 



Race of plants ; a peculiar form, or modi- 

 fication, become permanent. 

 Raceme; a mode of flowering, in which 

 the common peduncle, or axis, is elon- 

 gated, with the flowers on short lateral 

 pedicels. 



Racemose; haying the flowers in racemes. 

 Rachis ; the common peduncle, axis, or 

 elongated receptacle, on which florets 

 are collected in a spike; also, the mid- 

 rib of a pinnatifid frond, in the Ferns. 

 Radiate; diverging from a common cen- 

 tre; haying rays, (i. e. ligulate florets) 

 at the circumference. 

 Radiatiform; in compound flowers, where 

 all the florets are ligulate, i 

 toward the circumference. 

 Radical; belonging to, or growing im 



mediately from, the root. 

 Radicating ; sending out roots, or strik- 

 ing root at the nodes. 

 Radicle ; a little root; the slender fibrous 



branch of a root. 



Rameal ; belonging to the branches. 

 Ramose; branching. 

 Rank ; a row, or arrangement in a line 

 Raphe; the ridge on one side of an in- 

 verted ovule, or seed, formed by the 

 adhesion of the funiculus, or seed- 

 stalk. 



Rays ; the ligulate florets round the disk 

 of a compound flower; also, the foot- 

 stalks, and enlarged marginal flowers, 

 of an umbel. 



Receptacle; the apex of the peduncle 

 (much dilated in the Compositae) on 

 which the parts of a flower (or entire 

 florets) are inserted; also, the seat of 

 the fruit. as in the Strawberry, &c. 

 Recurved ; curved backward. 

 Refiexed ; bent strongly backward. 

 Refracted; doubled backward; or beni 



abruptly back. 

 Regular ; having the parts uniform am 



equal among themselves. 

 Remote; seated or growing at an un 



usual distance. 

 Reniform; kidney-shaped. 

 Replicate ; flolded back on itself. 

 Resupinate ; turned upside down. 

 Reticulate; netted; like net- work. 

 Retrorse, or retrorsely ; pointing back 



ward, or downward. 

 Retuse; having a shallow sinus at thi 



end. 



Revolute ; rolled backward, or outward. 

 Rhizoma; a root-stock; a root-like under 



ground stem. 

 Rhombic ; 4-sided, with unequal angles 



shaped like a lozenge. 

 Rhomboid ; oval, but somewhat angular 



at the sides. 



Ribbed ; having parallel ridges. 

 Rigescent ; stifflsh ; becoming stiff. 

 Rigid; stiff; not pliable. 

 Rimose; having cracks, or chinks. 

 Ringent; gaping; the lips and throa 



open. 

 Root-stock; a kind of underground stem 



usually elongating and creeping, 

 sometimes tuberous, with buds, or 

 eyes. 



Rosaceous; with 5 regular spreading 

 petals, like a rose. 



Rostrate; beaked; having a process re- 

 sembling a bird's beak. 



Rosulate; in a rosette; arranged in cir 

 cular series and spreading, like the 

 petals of a double rose. 



Rotate corolla; wheel-shaped; gamope- 

 talous and spreading almost flat, with 

 a very short tube. 



Round; circular, or globular; not an- 

 gular. See globose, orbicular, and terete. 

 ; an imperfectly developed or- 



Rufous ; reddish -brown, or rust-colored. 



Rugose; wrinkled: rugulose ; finely 

 wrinkled. 



Ruminated albumen; folded and varie- 

 gated. 



Runcinate ; somewhat lyrate, with sharp 

 lobes pointing backward, resembling 

 the teeth of a mill-saw. 



Runner; a slender procumbent shoot, 

 producing roots and leaves at the end, 

 only, as in the Strawberry. 



Sac ; a membranous bag, or boundary 

 of a cavity. 



Saccate; having, or being in the form of, 

 a sac or pouch. 



Sagittate; arrow-shaped; notched at base, 

 with the lobes acute. 



Salver-form; tubular, with the border 

 horizontally spreading. 



Samara ; an akene-like fruit, with a 

 winged apex, or margin, as in the 

 Ash, Elm, Maple, &c. 



Samaroid; margined like a samara. 



Sarcocarp ; the fleshy portion of a peri- 

 carp (as in a drupe), between the 

 epicarp and the endocarp. 



Sarmentose; having, sending forth, or 

 being in the form of, runners. 



Scabrous; rough with little points, or 

 short rigid hairs. 



Scales ; small thin plates, or leaf like pro- 

 cesses; also, the leaflets of the involu- 

 cre, in the Compositae, the bracts of 

 the Cyperaceae, &c. 



Scandent; climbing. 



Scape; a peduncle proceeding directly 

 from the root. 



Scarious ; dry, skinny and transparent. 



Scattered ; distributed thinly, and with- 

 out regular order. 



Scorpioid inflorescence; rolled back from 

 the apex (circinate), before develop- 

 ment. 



Scrobiculate; marked by little pits, or de- 

 pressions. 



Scutellae; little shield-Hke orbicular ses- 

 sile receptacles of some of the Lic'iens. 



Scutellate ; resembling a target, or shield. 



Scyphiferous ; bearing a scyphv s, ( r vase, 

 as the podetia of some Lichens. 



Scyphus ; a cup, in the form of an in- 

 verted cone. 



