. The natural history of plants. Botany. 383 NATURAL HISTORY OF PLANTS. csgyptiacum. have specimens of Hypericum, sucli as H. virginium, Elodes, csgyptia- cum (fig. 361-353), which have been proposed as types pf as many sejmrate genera, under the names Elodea,^ Elodes,^ and Triadenia? In H. Drummondii, a species from Florida, the flowers are those of Hypericum (such as Brathys, for example); but the type is quaternary instead of quinary. The four sepals are imbricate and nearly equal to each other; whence the generic name Iso- phyllum,^ which has been proposed for this plant. The flower is equ
. The natural history of plants. Botany. 383 NATURAL HISTORY OF PLANTS. csgyptiacum. have specimens of Hypericum, sucli as H. virginium, Elodes, csgyptia- cum (fig. 361-353), which have been proposed as types pf as many sejmrate genera, under the names Elodea,^ Elodes,^ and Triadenia? In H. Drummondii, a species from Florida, the flowers are those of Hypericum (such as Brathys, for example); but the type is quaternary instead of quinary. The four sepals are imbricate and nearly equal to each other; whence the generic name Iso- phyllum,^ which has been proposed for this plant. The flower is equally tetramerous in other American species, such as H. amplexicaule, multicaule, pauciflorum, Crux Andrece, etc.; but of the four decussate sepals, the two more interior are much less developed than the two others ; of these the genus Ascyrum ^ has been Pig. 353. Flower, , periantli removed (4). made. With all these variations in the flower,^ the St. John's "Worts present as common characters : opposite leaves,. ^ Adans. Fam. des Fl. ii. 442.âSpaoh, Suit, a Buffon, T. 363 ; Ann. Se. Nat. ser. 2, v. 165, 353. âBndl. Gen. n. 5465. ^ Spach, Suit, a Buffon, v. 369 ; Ann. Sc. Xat. loc. (At. 171, 363.âPayer, Organog. 3, t. 1; Fam. Nat. 79. ^ Spach, Suit, d Buffon, v. 370 ; Ann. So. Nat. loo. cit. 172, 354, t. 4, 5. M. Spach has esta- l)lished in this group many genera which may be retained as so many distinct subgenera. They may be grouped in two series. To the first, be- sides Euhyperiiyum, Androsmmum, Erimanthe, belong Drosanthe (Spach, Ann, Sc. Nat. loc. cit. 355), which has denticulate or pectinate sepals 3-adelphous stamens and an osseous placenta; Webbia (Spach, loo. cit. 356), whose stamens are also 3-adelphous, with seeds spongy without; Olympia (Spach, loc. cit. 359), which with the flowers of Euhypeneum, has very unequal sepals (the 3 interior being much smaller) ; Gampylo- pus and Fsorophytum (Spach, he. cit. 360), very near Andros<mium; Oampylosporus, 'Norysca,
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