Bladder Senna, from the resemblance of 

 its pods to those of Colutea, with which in 

 fact it was formerly combined According 

 to Thunberg, the dried and pulverised 

 roots and leaves are useful in diseases of 

 the eye. [A. S.] 



SUTTONIA. Myrsine. 



SUTURAL. Of or belonging to the su- 

 ture ; thus sutural dehiscence is the act of 

 splitting along the line of junction of two 

 valves. 



SUTURE. The line of junction of two 

 different parts. 



SUZELLE. (Fr.) Rumex acetosa. 



SWAINSONA. This genus of Legumi- 

 nosm differs from Colutea in the stigma 

 being terminal not lateral ; and also in the 

 legume, which is not so much inflated as 

 in Colutea, and more pointed from the per- 

 sistence of the style. The flowers have 

 nearly equal calyx-teeth ; the standard is 

 almost orbicular, the wings oblong falcate 

 or twisted, and the keel broad obtuse or 

 produced into a twisted beak ; the upper 

 stamen free ; and the pod inflated or 

 turgid, with the upper suture compressed, 

 or the pod divided by a longitudinal par- 

 tition. The species are Australian herbs 

 or undershrubs, with unequally pinnate 

 leaves, and flowers in axillary racemes, 

 either purple blue red or white. Some of 

 the species, as S. Greyana, S. procumbens 

 also known as S. violacea, and S. galegifolia, 

 are very handsome plants. [M. T. MJ 



SWALLOWWORT. Asclepias ; also 

 Chelidonium majus and Thapsia Asclepium. 



SWAMMERDAMIA. A genus of Compo- 

 site, represented by a Tasmanian under- 

 shrub, whose leaves are wedge-shaped 

 entire leathery, whitish on the under- 

 surface; and which bears pale flowers, 

 arranged in paniculate heads, each head 

 surrounded by an involucre of overlapping 

 linear scales. The receptacle is naked, the 

 outer florets three-toothed female, the cen- 

 tral florets hermaphrodite flve-cleft; the 

 achenes cylindrical, surmounted by a pap- 

 pus of one row of hairs, each with a little 

 knob at the extremity. [M. T. MJ 



SWAN-NECK, or SWANWORT. Cyc- 

 noches. 



SWARTZIA. This genus was formerly 

 regarded as the type of a distinct suborder 

 of Leguminosce ; but it now forms, in com- 

 bination with a few allied genera, a tribe 

 of the suborder Ccesalpiniere. Its flowers 

 are thus characterised :— The calyx is at 

 first globular or egg-shaped and firmly 

 closed, but ultimately splits irregularly 

 into valves or sepals, which curve back- 

 wards ; the corolla is frequently altogether 

 wanting, and when present consists of 

 only one petal, or rarely of two or three : 

 the stamens are indefinite in number, and 

 rise from beneath the ovary, some of them 

 being longer than the rest, and barren ; 

 and the ovary isusually stalked, and taper? 

 gradually at the top into a style of greater 



or less length. It is an exclusively tro- 

 pical American genus, and consists of 

 about forty species, most of which are 

 large forest-trees, and yield hard durable 

 timber. They have simple or more fre- 

 quently unequally pinnate leaves, and 

 axillary racemes of flowers, succeeded 

 usually by small splitting pods containing 

 several seeds. 



S. tomentosa, a native of French Guiana, 

 is one of the American trees named Palo 

 Santo by the Portuguese. It is of very 

 large size, with a trunk sixty or. more feet 

 high, and upwards of three feet in diame- 

 ter, supported at the base by six or eight 

 narrow buttresses. The heartwood is of 

 a reddish colour, or blackish in old trees, 

 very hard and close-grained, and extremely 

 durable. A red juice exudes from cracks 

 in the bark, and becomes hardened into a 

 blackisfrresin. [A. S.] 



SWEDE. A Kind of Turnip, so called 



from havingbeenintroducedfrom Sweden. 

 It is the Brassica canwestris rutabaga. 



SWEET-GALE. Myrica Gale. 



SWEET-JOHN. The narrow-leaved va- 

 rieties of Dianthus barbatus. 



SWEETLEAF. Symplocos tinctoria. 



SWEETSOP. The fruit of Anona squa- 

 mosa and As sericea. 



SWEETWATER. A variety of white 

 grape. 



SWEETWILLIAM. Dianthus barbatus; 

 also Silene Armenia. —, BARBADOS. 

 Ipomoea Quamoclit. 



SWEETWOOD. A timber obtained in 

 Jamaica from Oreodapline exaltataytu—^ 

 BLACK. Strychnodaphve floribunda. — , 

 VLOBLOLLY. Oreodapline Leucoxylon. — , 

 'LOWLAND. Nectandra sanguinea. — , 

 MOUNTAIN. Acrodiclidium jamaicense. 

 — , PEPPER. Nectandra sanguinea. — , 

 RIO GRANDE. Oreodapline Leucoxvhm. 

 — , SHRUBBY. Amyris. — ^ TIMBER. 1/ 

 Acrodiclidium jamaicmise,^Necfanara ex-'* 

 altata, and N. leucantha. — , WHITE. 

 Nectandra sanguinea and N. leucantha. — , 

 YELLOW. Nectandra sanguinea. 



SWERTIA. A genus of perennial herbs 

 of the order Gentianacem. The species are 

 distributed through Central Europe and 

 Asia, and occur also in Northern India. 

 The flowers have a five-parted calyx ; a 

 rotate flve-cleft corolla, whose segments 

 have at the base two little glandular pits 

 surrounded by fine hairs ; stamens inserted 

 on to the throat of the corolla ; anthers 

 unchanged ; fruit one-celled two-valved ; 

 seeds membranous, winged. S. perennis 

 is said to have been found formerly in 

 Wales. The Russians drink the infusion 

 of the leaves as a medicine, and the Tartars 

 apply the leaves to wounds. [M. T. MJ 



SWETH. Allium Schmnoprasum. 



SWIETENIA Mahagoni is the sole re- 

 presentative of a genus of Cedrclacea', pe- 

 culiar to the warmer parts of America, 

 and yielding the timber known as the Ma- 



4- r J I l c i 



