SWA 



OR, BOTANICAL DICTIONARY. 



S W E 



639 



ovate, compressed, about three in each cell. By the appear- 

 ance of the flower and seed-vessels, this little plant might be 

 taken for a Draba; but on examination, an essential differ- 

 ence is found, in the partition being contrary to the valves, 

 not parallel with them, and yet those valves are not keeled, 

 as in Lepidium, only concave ; neither is the silicle notched, 

 as in that genus. It is therefore no less remarkable for the 

 peculiarity of its generic character, than for its situation and 

 mode of flowering under water. Native of the northern parts 

 of Europe, flowering under water in July. Found also in 

 Ireland, in the gravelly bottom of Lough Neagh ; in Loch 

 Carran and Loch Tay, Scotland ; and near Llanberys, Llyn 

 y Cwn, and Ffynnonfrech, near Snowden ; and Llyn Aid, 

 Denbighshire, North Wales. 



Succory. See Cichorium. 



Succory Hawkweed. See Crepis. 



Suyar-Cane. See Saccharwn. 



Suyar Maple. See Acer. 



Sulphurwort. See Peucedanum. 



Sultan, Sweet. See Centaurea. 



Sumach. See Connarus, Coriaria, and Rhus. 



Summer Cypress. See Chenopodium Scoparia. 



Sun Dew. See Drosera. 



Sun-flower. See Helianthus. 



Sun Spurge. See Euphorbia. 



Supple Jack. See Paullinia. 



Suriana; a genus of the class Decandria, order Pentagynia. 

 GENERIC CHARACTER. Calix : perianth five-leaved; 

 leaflets lanceolate, acuminate, permanent. Corolla : petals 

 five, obovate, length of the calix, spreading. Stamina : fila- 

 menta ten, filiform, shorter than the corolla; antherae sim- 

 ple. Pistil: germen five, roundish; styles solitary, filiform, 

 erect, length of the stamina, inserted into the middle and 

 inner side of the germen ; stigmas obtuse. Pericarp : none. 

 Seeds: five, roundish. ESSENTIAL CHARACTER. Calix: 

 five-leaved. Petals: five. Styles: inserted into the inner 

 side of the germina. Seeds: five, naked. The only spe- 

 cies known is, 



1. Suriana Maritima. Root perennial ; stem shrubby, five 

 or six feet high; branches Greet, glaucous. Leaves clus- 

 tered in bundles, towards the ends of the branchlets, erect, 

 wedged, bluntish, short, nerveless, veinless, thickish, villose, 

 pubescent, pale-green, on very short petioles ; flowers small 

 and yellow. Native of the sea-coast of South America, and 

 the islands of the West Indies. Browne says, it is frequent 

 by the sea-side, in the parish of St. James, in Jamaica. Sow 

 the seeds on a hot-bed early in the spring : when the plants 

 come up, weed them, and refresh them frequently with water. 

 In warm weather, raise the glasses to admit fresh air. When the 

 plants are fit to remove, take them up carefully, and set each 

 in a small pot filled with light fresh earth ; plunge them into 

 the tan-pit, shading them until they have taken new root, 

 after which water them every evening in hot weather, and 

 admit fresh air in proportion to the warmth of the season. 

 -They must be kept very warm in winter, especially while 

 young. These plants make slow progress the first year, but 

 afterwards will grow pretty freely. 



Swallowwort. See Asdepias. 



Swartzia; a genus of the class Polyandria, order Mono- 

 gynia. GENERIC CHARACTER. Calix: perianth one-leafed, 

 inferior, coriaceous, coloured internally, four or five parted, 

 permanent; segments ovate, sharpish, reflexed, almost equal. 

 Corolla : petal one, lateral, erect, roundish, fringed, with a 

 short claw. Stamina: filamenta numerous, longer than the 

 calix, ascending, united at the. base, inserted into a semi- 

 circular receptacle, awl-shaped, some of them, which are 

 VOL. ii. 119. 



opposite to the petal, shorter and imperfect ; antheree round- 

 ish, flat, emarginate above and below, fastened by the back; 

 on the longer filamenta larger and oval. Pistil : germen 

 oblong, compressed, villose, placed on a thickish declining 

 pedicel ; style none ; stigma oblique, acute. Pericarp : 

 capsule coriaceous, obliquely ovate, pedicelled, one-celled, 

 two-valved. Seeds : few, ovate, covered at the base with a 

 pulpy pitcher-shaped oblique aril, and pedicelled. ESSEN- 

 TIAL CHARACTER. Calix: four-leaved. Petal: single, 

 lateral, flat. Legume: one-celled, bivalve. Seeds: arillated. 

 The species are, 



1. Swartzia Simplicifolia. With simple leaves, and round- 

 ish ovate petals, larger than the calix, and polyandrous flowers. 

 A shrub, ten feet high, with alternate, round, smooth, leafy 

 branches, dotted with whitish elevated points ; flowers yel- 

 low, fragrant. Native of woods in the Caribbee islands. 



2. Swartzia Grandiflora. With simple, oblong-ovate 

 leaves ; subtriflorous footstalks ; round, reniform, very large 

 petals ; and oblong legumes. This is so like the preceding, 

 that they can hardly be distinguished : the leaves are rather 

 narrower. Native of the island of Trinidad. 



3. Swartzia Dodecandra. With simple leaves ; dodecan- 

 drous flowers ; and oblong petals, of the length of the cup. 

 Native of South America. 



4. Swartzia Triphylla. With ternate leaves, and margined 

 footstalks. This is a middle-sized tree, rising to the height 

 of eight or ten feet or more, and branching towards the top ; 

 leaves alternate and digitated, with three of the leaflets ses- 

 sile, and annexed to the flat midrib ; flowers corymbose and 

 axillary ; petals yellow. Native of the Caribbee islands. 



5. Swartzia Pinnata. With pinnate leaves, and round 

 common footstalks, which sufficiently distinguish it from the 

 other species. Native of Trinidad. 



6. Swartzia Alata. With pinnate leaves, and winged com- 

 mon footstalk. This tree is about twenty-five feet high, with 

 wide spreading branches which are round and leafy; flowers 

 very small. Native of Guiana. 



Sweet Brier. See Rosa. 



Sweet Fern. See Scandix. 



Sweet Flag and Rush. See Acorus. 



Sweet Gum. See Liquidambar. 



Sweet Maudlin. See Achillea. 



Sweet Pea. See Lathyrus. 



Sweet Sultan. See Centaurea. 



Sweet William. See Dianthus. 



Sweet Willow. See Myrica. 



Swertia; a genus of the class Pentandria, order Digynia. 

 GENERIC CHARACTER. Calix : perianth five-parted, flat, 

 permanent; segments lanceolate. Corolla: one-petalled, 

 wheel-shaped ; border flat, five-parted ; segments lanceolate, 

 bigger than the calix, with the claws connected ; nectaries 

 ten, as it were two dots in the base of each segment of the 

 corolla, within excavated, girt with small erect bristles. Sta- 

 mina: fiiamenta five, awl-shaped, from erect spreading, 

 shorter than the corolla ; anther oblong, incumbent. Pistil: 

 germen ovate-oblong; style none; stigmas two, simple. 

 Pericarp : capsule round, acuminate at both ends, one-celled, 

 two-vaived. Seeds : numerous, small, fastened to the suture 

 of the capsule. Observe. In the fourth species the nectaries 

 project beneath the horns ; and in it, and the fifth and sixth 

 species, the flowers are four-cleft. ESSENTIAL CHARACTER. 

 Corolla: wheel-shaped, with two nectariferous pores at the 

 base of each segment. Capsule: one-celled, two-valved. 

 Seeds: numerous, inserted into the margins of the valves. 

 The species are, 



1. Swertia Perennis; Marsh Swertia or Felwort. Ccrollas 

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