﻿Observations on the Flora of Japan, 



(Continued from p. 94.) 



by 



T. Makino. 



Utricularia (Oligocista) nipponica Makino sp. nov. 



A minute annual, 9-21 mm. high ; rhizome filiform, white, creeping in 

 mud, sparsely utriculiferous and thinly puberulent with very minute patent 

 hairs as well as roots and the lower portion of leaves ; roots filiform, white, 

 loose ; utricles shortly pedicellate, obliquely oval-ovoid. Leaves loosely 

 placed on rhizome, very narrowly linear, gradually attenuated below, obtuse, 

 entire, glabrous, 1-nerved, green above, white and in mud below, 3-6 mm. 

 long, about ^ mm. broad. Scape erect, 1-3-flowered in the apical portion, 

 simple, capillary, terete, glabrous, with 2-3 apartly placed minute scales ; 

 scales subulato-deltoid, acuminate, entire, erect-patent or adpressed, fixed by 

 the base, ^-J mm. long. Flowers minute, 1J mm. long, 1 or approximately 

 2-3 and often accompanied by an abortive flower-bud, very shortly pedi- 

 cellate ; pedicel shorter than or equal to the lowest bract in length, erect in 

 flower and in fruit, stout; bracts fixed by the base, membranaceous, the lowest 

 one about J mm. long, 3-fid with sharply pointed lobes, the midlobe deltoid 

 and lateral lobes subulate ; upper bracts simple, ovato-deltoid, acuminate. 

 Calyx glabrous, about 1 mm. long ; lobes orbiculate or broadly orbiculate, 

 permanently rounded and entire or slightly irregularly crenulate at the apex, 

 concave, membranaceous, persistent, the upper lobe very slightly longer. 

 Corolla exserted, violet ; the upper lip erect, broad-oblong, truncato-emargi- 

 nate, about 1 mm. long ; the lower lip large, reflexed, rounded, shallowly 

 3-lobed, If mm. long ; spur large, horizontal, pointed forwards, somewhat 

 exceeding the lower lip, subfalcately conical, obtuse at the apex, about 1J mm. 

 long. Stamens 2, about \ mm. long. Ovary ovoid, with very minute 

 and many ovules ; style very short ; stigma dilated. Capsule as long as 

 the persistent calyx, ellipsoid, obtuse, longitudinally dehiscing through the 

 front side, with a thin carpel, glabrous, %-\\ mm. long ; placenta ellipsoid. 

 Seeds minute, oval, smooth, with reticulated testa. 



