Lentibulariaceae 



815 



mm. long, much shorter than the calyx; seeds with raised 

 oblique striations. Aug.-Sept. Wet muddy places in low- 

 lands and hills; Hokkaido, Honshu, Shikoku, Kyushu. 



4. Utricularia bifida L. Mimik.\kigl-sa. Glabrous 

 very slender herb; subterranean stems capillary, with bladders; 

 aerial leaves small, broadly linear to oblanceolate; scapes very 



' slender, erect, 7-15 cm. long; scalelike leaves membranous, few, 

 loose, ovate or narrowly so, obtuse or acute, about 1 mm. 

 long, basifixed; flowers 2-7(-10), loose, the bracts ovate, acute, 

 the bracteoles 2, linear, about half as long as the bracts, die 

 pedicels 2-3 mm. long, arcuate-spreading, 3-7 mm. long in 

 fruit, winged; calyx-segments membranous, broadly ovate, 

 nearly as long as the pedicels, obtuse; corolla 3.5-4 mm. long, 

 yellow, the spur directed downward, about 3 mm. long, acute; 

 capsules globose, about 3.5 mm. long; seeds with raised oblique 



striations. Aug.-Oct. Wet muddy places in lowlands and 



hills; Honshu, Shikoku, Kyushu. Formosa, China, India, 



Malaysia, and Australia. 



5. Utricularia exoleta R. Br. U. nagtirae Makino 



MiKAWA-TANUKi-Mo, Ito-tanuki-mo. Glabrous, very deli- 

 cate sedentary aquatic herb, in shallow water; stems circinnate; 

 leaves 5-10 mm. long, 1- to 3-times dichotomously forked, the 

 segments capillary, very narrow, minutely toothed; bladders 

 absent or 1-3 on a leaf, very small; scapes 5-8(-12) cm. long; 

 scalelike leaves 1-3, distant, membranous, ovate, basifixed, 

 0.5-1 mm. long; flowers 1-3, the bracts broadly ovate, retuse, 

 the pedicels slender, slightly curved, 3-6 mm. long in fruit, 

 terete; caljrx membranous, about 2 mm. long, the segments 

 orbicular or broadly obovate, rounded at apex, scarcely ac- 

 crescent after anthesis, enclosing the lower half of capsule; 

 corolla yellow, 5-6 mm. across, the spur obtuse, curved for- 

 ward, as long as to slighdy longer than the lower lip; capsules 

 depressed-globose, about 3 mm. across; seeds elliptic, about 1.2 

 mm. across inclusive of the wing, lenticular, the winged-mar- 

 gin undulate-toothed. Aug.-Nov. Shallow water in paddy 



fields and ponds in lowlands; Honshu (Tokaido and Kinki 

 Distr.), Kyushu; rare. Formosa, India, Africa, and Aus- 

 tralia. 



6. Utricularia multispinosa (Miki) Mild. U. minor 

 var. multispinosa Miki; U. minor sensu auct. Japon., non L. 



HiME-TANUKi-Mo. Delicate sedentary aquatic herb in 



shallow water; leaves rather sparse, 3- to 4-times dichotomously 

 forked, 8-13 mm. long, with a very short rachis, the segments 

 linear-filiform, slightly flattened, entire, with a minute apical 

 spine in the summer leaves, with 2 or 3 spines in the autumn 

 leaves; bladders few, loose; branches below ground short 

 leaved, with several bladders; scapes about 10 cm. long, slen- 

 der; scalelike leaves few, scattered, ovate-deltoid, small; flowers 

 loose, 4-8, the bracts similar to the scalelike leaves, the pedicels 

 4-5 mm. long, obliquely spreading; cal>'x-segments erect, 

 broadly ovate, 2-2.5 mm. long, rounded at apex, about t\vice 

 as long as the capsule; corolla pale yellow, about 8 mm. across, 

 the spur short-conical; capsules globose; seeds winged, orbicu- 

 lar. Shallow ponds; Hokkaido, Honshu. Kuriles and 



Korea (r). 



7. Utricularia intermedia Hcyne. (?) U. ochroleuca 



sensu auct. Japon., non Harmi. Ko-tanuki-mo. Rather 



delicate sedentary aquadc herb; leaves rather dense, 4-8 mm. 

 long, 2- to 3-times ternately or dichotomously dissected into 

 linear, flat, acute segments; summer leaves with few spinule- 

 tipped minute teeth on margin and at rip of segments; leaves 



absent in subterranean branches, only bladders present; scapes 

 5-15 cm. long, 2- to 5-flowered; scalelike leaves 1 or 2, small, 

 the bracts ovate, die pedicels 7-10 mm. long, ascending; calyx- 

 segments about 3 mm. long; corolla 12-15 mm. across, pale 

 yellow, the spur cylindric, parallel with die lower lip and as 



long as the latter. June-Scpt. Shallow ponds especially in 



high moors; Hokkaido, Honshu. Kuriles, Korea, and 



widely spread in the temperate and northern regions of the N. 

 Hemisphere. 



8. Utricularia pilosa (Makino) Makino. U. vulgaris 



var. pilosa Makino No-tanuki-mo. Floating aquatic 



herb; stems rather thick, elongate; leaves 3-4 cm. long, much 

 dissected into fine capillary loosely toothed or smooth seg- 

 ments, spine-ripped; bladders prominent, 2-2.5 mm. long; 

 scapes thicker than the aquaric stems, 8-20 cm. long, without 

 scalelike leaves; flowers 4-10, loosely arranged, the bracts 

 thinly membranous, ovate, about 2 mm. long, acute, the pedi- 

 cels deflexed after anthesis, thickened in upper part, 6-10(-I2) 

 mm. long; calyx-segments ovate-elliptic, 2.5-3 mm. long, 

 rounded at apex, accrescent after anthesis, to 4-5 mm. long in 

 fruit, spreading; corolla 6-7 mm. across, pale yellow, the spur 

 obliquely descended, obtuse, slightly shorter than die lower 

 lip, loosely puberulent; capsules globose, 4-5 mm. across; style 

 persistent, as long as the capsule, broadened at base; seeds 

 obtusely 5- or 6-angled. — —Aug.-Oct. Shallow ponds and 

 ditches in lowlands; Honshu, Shikoku.^ s. Korea. 



9. Utricularia japonica Makino. U. vulgaris sensu auct. 



Japon., non L. Tanuki-mo. Rather stout floating aquaric 



herb; respiratory branches filiform, nearly leafless; leaves rather 

 densely arranged, 3-6 cm. long, pinnately divided, the seg- 

 ments loosely spine-toothed; bladders few to rather numerous 

 per leaf; scapes 20-30 cm. long, the scalelike leaves few, thinly 

 membranous, broadly ovate, 2-3 mm. long, obtuse; flowers 4-7, 

 sterile, the bracts simulating the scalelike leaves, the pedicels 

 1.5-2.5 cm. long, obliquely spreading, arcuate after anthesis; 

 calyx segments 2, equal, elliptic, 3-4 mm. long, rounded at 

 apex; corolla pale yellow, about 15 mm. across, the spur 

 obliquely descending, about 6 mm. long, obtuse, shorter than 



the lower lip. July-Sept. Ponds and ditches in lowlands 



and hills; Hokkaido, Honshu, Shikoku, Kyushu; common. 

 Sakhalin, s. Kuriles, and Manchuria. 



10. Utricularia siakujiiensis Nakajima. Shakujii- 

 TANUKi-MO. Resembles the preceding; plant free-floating; 

 respiratory branches absent; leaves pinnately dissected, the 

 segments slender, obscurely toothed or nearly entire, spines 

 very short; bladders few; scapes 10-20 cm. long, rather thick, 

 the scalelike leaves few, membranous, narrowly ovate, about 

 2 mm. long, obtuse; flowers 5-10, the bracts broadly ovate, 

 3-3.5 mm. long, obtuse, clasping at base, the pedicels ascend- 

 ing, about 2 cm. long, slender; upper calyx-segment slightly 

 larger than the lower, ovate, about 3 mm. long, obtuse to 

 rounded at apex; corolla about 10 mm. across, yellow, the spur 

 about 8 mm. long, longer than and descending under the 



lower lip, straight, obtuse; capsules globose. Aug.-Sept. 



Ponds; Honshu (near Tokyo). 



11. Utricularia tenuicaulis Miki. Ito-tanuki-mo. Re- 

 sembles the preceding; plants free-floating, slender, respiratory 

 branches absent; leaves pinnately dissected into finely spinule- 

 toothed segments; bladders few; scapes 10-15 cm. long, with 

 few ovate, membranous scalelike leaves; flowers 3-7, the bracts 

 broadly ovate, membranous, rounded at apex, about 3 mm. 



