ltS6 



SEHPICULA— SIDA. 



A . Florets tuTnilar ; those of the ray I 

 iL-onting. I 



hierncijo'ha, (fire-weed, w. J. 0.) stem j 

 virgate, paniculate ; leaves clasping, oblong, 

 acute, unequally, acutely, and deeply tooth- 

 ed ; involucre smooth ; seeds pubescent ; 

 stem 2-6 1". high, succulent, branching tow- 

 ard the summit; flowers in a compound, 

 terminal panicle. Roadsides. 



wlfra'ris, (groundsel, y. 2^.) flowers in 

 crowded coiymbs. Stem 18 i. Cultivated 

 grounds. Introduced. 



B. Flou-crs irith ray Jlorcts. 



avrc'a, (y. 2-f .) radical leaves ovate, cor- 

 date, serrate, petiohite ; cauline ones pin- 

 natitid, toothed, the terminal segments lan- 

 ceolate ; peduncles thickened ; flowers 

 somewhat umbelled. Shady woods. 2 f. 



obova'tn, (y. J. 2i.-) stem smoothish; 

 radical leaves obovate, crenate-serrate, 

 petiolate ; cauline ones pinnatilid, toothed ; 

 flowers somewhat umbelled, on long ped- 

 uncles ; rays 10-12. 1 f. Rocky hills. 



pavpercu'bia, (2^.) simple, erect, nearly 

 naked ; leaves lanceolate, radical ones sub- 

 entire and gash-toothed ; corymb few-flow- 

 ered ; involucrum smooth ; rays small. 



gra'cilis, (y. J. 2i.) slender; radical 

 leaves very long, petioled, orbicular, sub- 

 cordate, crenate ; cauline ones few, very 

 remote, hnear-oblong, dilated at the base, 

 inci-sely toothed; jjedunclea very short, 

 hairy, sub-umbellcd ; involucrum smooth ; 

 rays few, very short. 1 f. 



balsami'ta, (y. J. 2^.) stem and peduncles 

 villose at the base ; radical leaves oblong, 

 serrate, petioled; cauline ones lyrate or 

 pinnatifid ; flowers sub-umbelled. Mead- 

 ows. 1-2 f. 



cilla'ta, (w.) pilose ; leaves lance-liuear, 

 ciliate. S. 



tomento'sa, (M. 2^.) stem simple, hoary 

 and woolly ; leaves petioled, oval, lanceo- 

 late, serrulate ; corj'mb sub-umbelled ; seed 

 pubescent. 2 f. jS'. 



fastigia'ta, (y.) leaves of the root ob- 

 long, cordate-ovate, crenate-toothed, glab- 

 rous, cauline ones pinnatifid ; segments 

 gash-toothed ; flowers sub-umbelled ; ped- 

 uncles and involucrum glabrous. 2 3 f. tS. 



loba'ta, (butter-weed, y. M. %.) glab- 

 rous ; leaves pinnatifid, lyrate , lobes round, 

 Bub-repand ; corymb compound ; highest 

 peduncles eub-umbelled ; seed oblong, 

 striate. 1-3 f. jS. 

 SERPIC'ULA. 20—9. (Hydrocharides.) [From 



serpo, to creep.] 



canaden"si>i, (little-snake weed, w. Ju. 

 li) perfect flow.ers triandrous ; stigmas re- 

 flexed, bifid ; leaves linear, acute, some- 

 what whorled, glabrous, denticulate ; pistil- 

 late corollas tubular. 



SESA'MUM. 13—2. (BignonicE.) [An Egyp- 

 tian name.] 



infiicum, (oily grain, bene-benni, r-w. 

 Au. @.) leaves lance-ovate ; outer ones 3- 

 lobed ; upper ones undivided, serrate. 2-4 f. 

 SESBA'NIA. 16-10. {Leguminosa:.) 



vesica'ria, (y. Au.) leaves pinnate ; leafets 

 oblong, obtuse, glabrous ; racemes shorter 

 *iian the leaves. 5-7 f. S. 



macrocoT^'pa, (y. and p. S. ^.) glabrons 

 leaves pinnate ; leafets elliptic, glabrous, 

 entire, sub-glaucous beneath ; racemes ax- 

 illaiy, few•flo^vered ; legumes .slender, 

 nearly terete. 4-12 f. S. 

 SES"ELI. 5—2. iUmbellifcrce.) [Origin of 



the name doubtful.] 



trite/' /ta'tum, (M. y. 2^.) leaves triter- 

 nate ; leafets long, linear ; umbels hemis- 

 pheric ; involucrum leafy, linear ; leafets 

 equal length with the umbels. 

 SESLE'RIA. 3-2. (Graminea:.) 



dacfyloi'des, (moorgrass, g.) culm leafy 

 setaceous ; leaves short, flat, subulate, sub 

 pilose ; spikes 2-3, few-flo\^'e)•ed ; calyx en- 

 tire, acuminate ; stipules bearded. 4-5 i. S. 

 SESU'VIUM. 11—5. (Ficoideco.) ^ 



sessi'Ie, (r. Ju.) flowers sessile ; leaves 

 linear-oblong, flat. Stem succulent. Sea- 

 coast. 



pedun"cu'latiim, [w. Au.) prostrate, terete; 

 leaves linear-lanceolate, obtuse, entire, suc- 

 culent ; flowers .solitary, axillary, short-ped 

 uncled, polyandrous. <S. 

 SEYME'IUA: 13—2. (Scrophularia.) 



tcitnifo'lia, (y-p. Au. 0.) glabrous, very 

 branching; leaves compound -pinnatifid; 

 segments filiform, oppo.site, and alternate, 

 corolla sub-rotate. 3-4 f S. 



pectina'ta, leaves pectinatc-pinnatifid. 



macro' jihyVla, (y. Ju.) branched ; lower 

 leaves sub-pinnatifid or deeply toothed, up- 

 per ones lanceolate, entire ; corolla very 

 woolly ; stamens scarcely exserted. 4-5 f. a 



SIBBAL"DIA. 5—5. (Rnsacem.) [After Sii 



Robert Sibbald, author of Scotia Illustratica.] 



pi-ocum"hens, (y. Ap. IX) leaves ternate ; 



leafets wedge-form, 3-toothed, smooth above 



hairy beneath. 



ered'ta, var. parvijlo'ra, (r-w. Ju. $ ] 

 erect, branching; radical leaves about 

 twice 3-cleft ; segments sub-divided ; leaves 

 of the stem sessile, alternate, sub-bipinnati- 

 fid. 4-6 i. S. 



SIC'YOS. 19—15. (Cucurbitacea.) [From 

 the Greek sikuos, a cucumber.] 

 angida'ta, (single-seed cucumber, w. @.) 

 leaves cordate ; back lobes obtuse, 5-angled, 

 scabrous, denticulate ; tendrils umbellate ; 

 sterile flowers corymbose-capitate, with the 

 common peduncle long ; fertile flowers ses- 

 sile ; fruit Bmali, ovate, hispid. 



SI'DA. 15—12. {MalvacecE.) [Origin of the 



name doubtful.] 



abu'lilon, (Indian mallows, y. Ju. 0.) 

 leaves round-cordate, acummate, toothed, 

 tomentose ; peduncles solitary, shorter than 

 the petioles ; capsule 2-awned, truncate. 

 4-6 f. 



spino'scf, (y. Ju. 0.) leaves ovate-lanceo- 

 late, serrate, dentate, with a sub-spino.se 

 tubercle at the base of tlie petiole ; .stipules 

 setaceous ; pedicels axillaiy, sub-solitary, 

 mostly shorter than the stipules and petiole ; 

 carpels 5, bi-rostrate ; seeds triquetrous, 

 ovoid. 1-2 f. 



napce'a, (w. Ju. 2^.) leaves palmately 5- 

 lobed, glabrous ; lobes oblong, acuminate, 

 toothed ; peduncles many-flowered ; cap- 

 eules awnless, acuminate. 2-4 f. Rock^' 

 D''aces. 



