742 Gentianaceae 



1. Menyanthes trifoliata L. M. palustris S. F. Gray 20-40 cm. long, the bracts broadly ovate, 3-8 mm. long, the 



Mizu-GASHFWA, MiTsu-GASHnvA. Rhizomcs 7-10 mm. across, pedicels 1-2.5 cm. long; flowers 1-1.5 cm. across; calyx short, 



few-leaved in upper part; leaflets rather thick, oblong, ovate- the lobes elliptic; capsules 5-7 mm. across; seeds 2.5-3 mm. 



elliptic, or rhombic-elliptic, sessile, 4-8 cm. long, 2-5 cm. wide, across. Apr.-Aug. Wet boggy places and margins of lakes 



obtuse, obtusely toothed, or nearly entire, sessile; scapes terete, and ponds; Hokkaido, Honshu, Kyushu; rather common. 



8. FAURIA Franch. Iwa-icho Zoku 



Glabrous, rather fleshy scapose perennial of wet slopes, with stout creeping leafy rhizomes; leaves radical, rather thick and 

 soft, obtusely denticulate, petiolate, sheathing at base; inflorescence terminal, a dichotomous or trichotomous 10- to 30-flowered 

 cyme, the bracts herbaceous; flowers 5-merous; calyx-tube adnate to the ovary; corolla infundibuliform, deeply 5-lobed, the 

 lobes induplicate in bud, with longitudinal ridges inside; stamens inserted on the corolla-tube; ovary semi-inferior, 1-locular, with 

 5 glands at base; style with a peltate stigma; capsules cylindric, 2-valved, the valves 2-lobed; seeds ellipsoidal, rather flat, gray- 

 white, lustrous, rather numerous. One species, in Japan and w. N. America. 



1. Fauria crista-galli (Menz, ex Hook.) Makino. Men- 15-40 cm. long; flowers pedicelled, white, about 12 mm. across, 

 yanthes crista-galli Menzies ex Hook.; Villarsia crista-galli the bracts broadly lanceolate, obtuse; calyx-lobes deltoid-ovate, 

 (Menzies) Griseb.; Fauria japonica Franch.; Nephrophyllid- obtuse, about 8 mm. long; capsules cylindric, 1-1.5 cm. long; 



ium crista-galli (Menzies ex Hook.) Gilg Iwa-icho. seeds about 2.5 mm. long. July-Aug. Wet alpine slopes; 



Leaves long-petiolate, reniform, 3-6 cm. long, 4-10 cm. wide, Hokkaido, Honshu (n. and centr. distr. on Japan Sea side). 



somewhat retuse, cordate, obtusely denticulate, pedately 7- to s. Kuriles and w. N. America. 



15-nerved, the petioles 2-5 times as long as the blades; scapes 



9. NYMPHOIDES Hill Asaza Zoku 



Floating aquatic perennial herbs; leaves alternate, petiolate, ovate to orbicular, deeply cordate, sometimes peltate, entire or 

 undulate; flowers 1 to many, in fascicles, yellow or white, 5-merous, pedicellate; calyx-lobes oblong or lanceolate; corolla rotate, 

 the lobes induplicate in bud, hairy on margin or on inner side; stamens inserted at base of corolla, the filaments short; ovary 

 1-locular, with 5 small glands at base; style short or elongate, the stigmas 2(-3), lamellate; capsules ovoid or oblong, indehis- 



cent or irregularly ruptured; seeds hairy or glabrous, sometimes tubercled or winged. About 20 species, chiefly in the 



Tropics, especially abundant in s. Asia. 



lA. Flowers yellow, large; calyx 8-15 mm. long; seeds flat, with long tubercles on margin; leaves often with the lower edges slighdy 



united, subpeltate; petioles sheathed at base \. N. peltata 



IB. Flowers white, small; calyx 3-6 mm. long; seeds plump, smooth, lustrous; leaves alternate, not united on lower margin; petioles auricu- 

 late at base. 

 2A. Leaves large, 7—20 cm. across; pedicels 3-7(— 10) cm. long; flowers about 1.5 cm. across; corolla with long hairs inside; capsules 



not longer than the calyx 2. N. indica 



2B. leaves small, 2-6 cm. across; pedicels 1-3 cm. long; flowers about 8 mm. across; corolla-lobes ciliate; capsules slightly longer than 

 the calyx Z. N. coreana 



1. Nymphoides peltata (Gmel.) O. Kuntze. Menyan- lobed, the petioles decurrent on the stem, 1-2 cm. long, 

 thes nymphoides L.; 2V. flava Hill; Limnanthemum peltatum auriculate, clasping; flowers few, fasciculate, white, about 1.5 

 Gmel.; L. nymphoides (L.) Hoffmanns. & Link; L. nym- cm. across, the pedicels 3-10 cm. long; calyx-lobes broadly 

 phoides var. japonica Miq.; N. nymphoides (L.) Britt. & lanceolate, subobtuse, 4-6 mm. long; corolla-lobes long-hairy 



Brown Asaza. Rhizomes creeping; stems elongate, re- inside; capsules oblong, 4-5 mm. long, not exserted beyond the 



motely leaved; leaves floating, rather thick and soft, ovate to calyx; style about 2 mm. long; seeds gray-brown, lustrous, 



orbicular, 5-10 cm. across, deeply cordate with overlapping nearly globose, smooth, about 0.8 mm. across. July-Sept. 



lobes or sometimes slightly peltate, undulately toothed, the Ponds and shallow water in lowlands; Honshu, Shikoku, Kyu- 



petioles elongate, dilated and sheathing at base, the pedicels shu; common. ^Korea, Formosa, China, se. Asia to Australia, 



2-12 cm. long; calyx 8-15 mm. long, the lobes broadly Ian- and Africa. 



ceolate, obtuse, rather thick; corolla yellow, 3-4 cm. across, 3. Nymphoides coreana (Lev.) Hara. Limnanthemum 



long-ciliate; capsules narrowly ovoid, slightly longer than the coreanum Lev.; L. parvijolium sensu Miki, non Griseb. 



calyx, narrowed at apex; style about 3 mm. long; seeds flat, Hime-shiro-asaza. Stems slender, elongate, 1- to 2-leaved; 



obovate, about 3 mm. long, tubercled on margin, minutely leaves ovate-cordate or orbicular-cordate, 2-6 cm. across, deeply 



scabrous on both sides. June-Aug. Ponds and shallow lakes 2-lobed, entire, the petioles decurrent on the stem, unequal in 



in lowlands; Honshu, Shikoku, Kyushu; common. Korea, length, 1-10 cm. long, auriculate; flowers few, white, about 8 



Formosa, China, and generally in the temperate regions of mm. across, fasciculate, the pedicels 1-3 cm. long; calyx-lobes 



the N. Hemisphere. broadly lanceolate, subacute, 3-4 mm. long, membranous ; 



2. Nymphoides indica (L.) O. Kuntze. Menyanthes corolla-lobes ciUate; capsules elhpsoidal, 4-5 mm. long, slightly 



indica L.; Limnanthemum indicum (L.) Griseb. Gaga- longer than the calyx; style a littie less than 1 mm. long. 



BUTA. Stems slender, remotely 1- to 3-leaved; leaves orbicular- Aug. Ponds and shallow water; Honshu, Shikoku, Kyushu, 



cordate or ovate-orbicular, 7-20 cm. across, subentire, deeply Korea and Ryukyus. 



