RUELLIA-SAGITTARIA. 135 



nearly entire ; ray-Uorets very long, deflected, bifid. High grounds. Stem 

 3-4 f. Ray purple; disk brown ; in volucrum imbricate. 



fuigi'da, (y. Oct. %.) stern hispid, branches long, virgate, and 1-flowered; 

 leaves lance-oblong, denticulate, hispid; scale of the involucrum as Inn^ 

 as the ray ; ray-florets 12-14, 2-cleft at the summit ; stem 2-3 feet high, 

 branched. 



pinna' ta, stem furrowed, hispid ; leaves all pinnate ; flowers very large, yel- 

 low ; rays long, reflexed ; disk ovate, purple. 



lacinia'ta, (cone-flower, cone-disk sunflower, y. Au. %..) lower leaves pia« 

 nate; leafets 3-lobed; upper ones ovate; egret crenate ; stem glabrous. 

 Damp. 6-10 f. 

 nUELLIA. 13—2. {Pediculares.) 



stre'pens, (b. Ju. %.) erect, hairy ; leaves on petioles, opposite, lance-ovate, 

 entire ; peduncles 3-4-flowered ; segments of the calyx linear-lanceolate, 

 acute, hispid, shorter than the tube of the corolla; flowers axillary; stem 

 8-12 i. Shady woods. Penn. to Geo. 



RUMEX. 6 — 3. (^Polygonecb.) [From rumex, a spear, which the leaves of some of the speciea 

 resemble.] 



cris"pus, (dock, Ju. %.) valves of the calyx ovate, entire, all bearing grain- 

 like appendages on their backs; leaves lanceolate, undulate, acute. 2-3 f, 



ascctosel"lus, (field-sorrel, g. p. M. %.) valves without grains; leaves lance- 

 hastate; flowers dioecious. 6-12 i. 



aceto'sus, (garden-sorrel, %.) stem elongated ; leaves oblong, clasping, sagit- 

 tate, acute. Ex. 



patien"tia, (garden-dock, patience, %.) valves entire, one of them bearing a 

 grain-like appendage ; leaves lance-ovate, Naturalized. 



RUTA. 10—1. (RutacecB.) [From ruo, to preserve, because it was supposed to preserve 

 health.] 

 grave'olens, (rue,) leaves more than decompound; leafets oblong, terminal 

 ones obovate ; petals entire. Ex. 

 SABAL. 6—3. (Palnia.) 

 pti'mUa, (Ju. \i.) leaves fan-shape; scape panicled ; flowers sub-sessile, small ; 



berry dark-coloured. 4-6 f. Florida. 

 miV'ma, root creeping; fronds palmate, plicate ; fruit brownish. 81. S. 



SABBATIA. 5—1. (Gentianea.) [In honour of Liberatus Sabbati, author of a work called 



" Horlus Romanus."] 



campanula'ta, {p. An. (^,) siem terete; leaves lanceolate-linear, smooth; ca- 

 lyx as long as the corolla. 1 f. Flowers terminal, sub-solitary, on long 

 branches. Wet grounds. 



ftella'ris, segments of the calyx half as long as the corolla; leaves somewhat 

 fleshy, obscurely 3-nerved;' flowers solitary, at the extremity of the branch- 

 es, forming a small corymb; rose-coloured. 12-18 i. Salt marshes. 



anguta'ris, (American centaury, r. Au. <v). and ^.) stem square, somewhat 

 winged; leaves clasping; branches opposite. 1-2 f. 



caiyco'5«, flowers 7-9-parted; calyx leafy; leaves sessile. 



cor'ynibo'sa, {w. S.) flowers corymbed, corymbs few-flowered; leaves some- 

 what clasping; corolla 4-6-parted. Swamps. 



SACCHARUM. 3—2. (Graminem.) [The name is said to be of Arabic origin, derived from 



soukar, sugar.] 



qfficina'mm, (sugar-cane,) flowers panicled ; in pairs, one sessile and one pe- 



dicelled ; corolla 1-valved, awnless. From the East Indies. 

 SAGINA. 4—4. {CaryophyllecR.) 

 procum"bcns, (pearl-wort, w. Ju. %.) stems procumbent, smooth, branched; 



leaves linear-mucronate ; petals very short. 2-4 i. Borders of streams. 



Peduncles larger than the leaves. 

 ape'tala^ (©.) stems somewhat erect, sub-pubescent; flowers alternate; petals 



nearly obsolete, pale green. 



SAGITTARIA. 19—12. (JunccB.) [From sagitta, an arrow ; so called from the shape of the 

 leaves in some of the species.] 

 sagittifo'lia, (arrow-head, w. Ju. %.) leaves lanceolate, acute, sagittate; lobea 

 lanceolate, acute, straight. Var. latifolia. leaves ovate, sub-acute, sagit- 



