296 
HEPTANDllIA MONOGYNIA. 
Class VII. 
Class VII.— HErTANDRIA. 7 Stamens. 
A SMALL class, of which the Parinarium, which is a good tropical fruit, and the valuable Horse-chesnut, 
JEsculus, are the only remarkable genera. The Astrant hus is a curious genus of the natural order of Homalinese. 
Order 1. MONOGYNIA. 
7 Stamens. 1 Style. 
862. Trientalis. Cal. 7-leaved. Cor. 7-parted, equal, flat. Berry without juice. 
863. Disandra. Cal. about 7-parted. Cor. rotate, 7^partpd. Caps. 2.celled, many-seeded. 
SS*. Pisonia. Cal. campanulate, 5.cleft. Cor. O. Berry 1-celled, l-seeded. 
865. Petiveria. Cal. 4-leaved. Cor. O. Style lateral. Stigma pencil-shaped. Seed 1, with four reflexed 
awns at the end. 
866. Msculus. Cal. 1-leaved, inflated. Cor. 4-5-petaled, unequal, pubescent, inserted in the calyx. Caps. 
3-celIed. Seeds large, chesnut-like. 
867. Jonesia. Cal. 2-leaved. Cor. funnel-shaped, with a closed fleshy tube and 4-cleft limb. Nectary, a 
ring inserted in the throat of the tube. A Legumen. 
MONOGYNIA, 
862. TKIENTA'LIS. Wr. Winter-Green. PHmulacccB. Sp.2. 
5014: europee'a JV. oval-leaved ^ ^ c\i | my.jn W Britain m. wo. R s.p Eng. bot. 15 
5045 americana Ph. spear-leaved ^ A cu ^ jl.aii W N. Amer. 1816. R s.p 
863. DISAN'DRA. JV. Disandra. Scrophularinece. Sp.l. 
5046 prostrata JV. trailing !U lAl or § my.au Y Madeira 1771. R p.l Bot. mag. 218 
864. PISO'NIA. W. Pisonia. Ni/ctaginece. Sp.8. — 12. 
5047 aculeata W. prickly f_ CD cu 10 mr.ap G Jamaica 1739. C p.l Lam. ill. t. 861 
5048 frdgrans Lk. fragrant » [ZI cu 3 1823. C p.l 
5049 macrophylla Lk. long-leaved It □ cu 3 1823. C p.l 
.5050 nigricans ^. black * □ cu 3 ... G.w W. Indies 1806. C p.l 
5051 obovata Lk. obovate 3tt □ cu 3 1823. C p.l 
5052 mexicana W. Mexican M □ cu 4 Mexico 1824. C p.l 
5053 nitida W. shining * □ cu 3 Madagas. 1824. C p.l 
5054 grandis R. Br. large II i_J or 12 N. Holl. 1805. C p.l 
865. PETIVE'RIA. W. Petiveria. Chenopodece. Sp.2. 
5055 alliacea W. Garlic-scented **. □ cu 2 jn.jl W Jamaica 1759. C p.l 
5056 octandra dwarf tL □ cu 2 jn.jl W W. Indies 1737. C p.l 
866. ^S'CULUS. W. Horse-Chesnut. Hippocastanete. Sp. 8.— 10. 
5057 Hippocastanum W. common y *0 ap.my W Asia 1629. S co 
5058 Pavia W. red-flowered ^ or 20 my.jn Sc N. Amer. 1711. G s.l 
5059 discolor PA. dwarf ^ or 8 my R Georgia 1812. G s.l 
5060 flava W. yellow-floweredjf or 20 my.jn Y N. Amer. 1764. G s.l Dend. brit. 163 
5061 glabra W. en. smooth-leaved $ or 12 my.jn G.Y N. Amer. 1812. G co 
5035 
Tr. ehr. 33. t. 67 
Pl.ic. 213. t.219 
Sch. arb. 1. t. 38 
Dend. brit. 120 
History, Use, Propagation, Culture, 
862. Trientalis. From triens, the third of a thing ; why so named we do not understand. Sir J. E. Smith 
says, " Few persons have seen the fruit of this plant, and it was most unaccountably mistaken, even by 
Linnajus and Gaertner. The valves of the ripe capsule become concave externally, convex and polished 
within, and have been taken for a permanent corolla. But they are opposite to the calyx leaves, which the 
segments of the corolla are not. The beautiful tunics of the seeds were supposed to be the skin of a dried 
berry, and are not faithfully represented by Gajrtner. {English Flora, vol. ii. 208.) 
863. Disandra. From Suj, difficult, and atv/j^ otvS^aj, a male, or, in botanical composition, a stamen ; that is 
to say, a plant of which the stamens are subject to vary, and therefore difficult for botanists. A trailing plant 
with bright yellow flowers. 
864. Pisonia. So named by Plumier, in honor of William Piso, a physician at Amsterdam, author of the 
Natural History of Brazil, 1648, fol. P. aculeata is an inelegant tree with round reciming spiny branches, 
wanting support. It is common in the savannahs and other low places in the island of Jamaica, and in 
