142 BOTANICAL MAGAZINE. [Vol. XIX, 



minute, membranaceous, loose, vaginate, obliquely truncate, acutish at the 



apex, I-nerved or nerveless, ^—2 mm. l<>ng, the superior one or two some- 

 times evaginate and lato-subulatc being bract-like. Flower minute. Peri- 

 anth patulous, free, entire, one-nerved, concave, membranaceous, thick in 

 centre and carinate dorsally, yellowish-v iridescent and blotched with purple. 

 Sepals : tlie upper one subovato-elliptical, obtuse, hardly longer and broader 

 than the lateral ones, about 2| rara. long; lateral ones subobovato-oblong, 

 acutish, about 2| mm. long. Petals slightly shorter than sepals, subovato- 

 elliptical, obtuse, about 2 mm. and a little more long. Labellum some- 

 what shorter than the perianth, slightly adhering with the base of the 

 column, calcarate, about 4 mm. long including the calcar ; limb 3-lobed, 

 about 2 mm. long ; midlobe ample, emarginato-reniform, rounded on both 

 sides, scarcely subcrenulate on margin, vertically carinate dorsally, membrana- 

 ceous, about 1| mm. long, 3 mm. broad ; lateral lobes much smaller, erect, 

 subovate, entire, duplicate to the basal part of the midlobe at the apex ; 

 disk thick, ova to-deltoid, pubescent or nearly so ; calcar straight, parallel 

 to the ovary, cylindrical, obtuse, equal to the limb and nearly equall to 

 the perianth in length, membranaceous, smooth and naked internally, with 

 a few and very loose veins. Column short, stout, erect, dorso-ventrally 

 compressed ; clinandriurn obliquely truncate, subdeltoid, pyramidally convex 

 in centre ; rostellum distinctly projected, bifid ; stigma rounded. Anther 

 thinly membranaceous, slightly depressed, hardly 2-lobed on face, broadly 

 produced in front, glabrous. Pollinia 2, in pair, ovoid, about § mm. long ; 

 caudicle lato-linear-subulate, thin, longer than pollinia, about g mm. long; 

 retinaculum sagittate. Ovary clavato-filiform, about 3-4 mm. long including 

 the pedicel. Capsule oblong, about 9 mm. long, pedicellate. 



Nom. Jap. Momi-ran (T. Yoshinaga). 



Bab. Prov. Tosa : Mt, Yanaze (Torama Yoshinaga ! Oct, 1904). 



A rare species. It was found on branches of some species of Quer- 

 cus among Abies forest. It is nearly allied to Saccolabiwn Matsuran 

 Makino (in Bot, Mag., Tokyo, XVI. 1902, p. 12), which differs in the 

 forms of leaves and labellum. Momi-ran means " Abies Orchid." The 

 specific name is in honour of Mr. Torama Yoshinaga. 



Potamogeton lucens Linn. var. teganumensis Makino var. nov. 



Stem attaining about 2 m. or more in length, many-branched ; branches 

 more slender, 1-li mm. across. Leaves smaller, oblong to obloug-lanceolate, 



