1904.] 



OBSERVATIONS ON THE FLORA OF JAPAN. 157 



linear, acuminate, entire, 1-uerved, opposite to the pedicel, viridescent, the 

 lowest one largest and attaining about 8 mm. long, often curved. Flower 

 small, pedicellate, 7-9 mm. across, viridescent ; pedicel capillary, much 

 longer than the flower, attaining about 19 mm. in length, articulated in 

 the middle, the upper portion more or less obconically enlarged under the 

 flower. Sepals 4, patent, cruciate, ovato-oblong, obtuse, entire, reflexed 

 on margin, obscurely 5-nerved, membranaceo-herbaceous, about 4* mm. 

 'ong. Stamens 4, erect, inserted to the very base of sepals, shorter than 

 sepals, nearly 3mm. long: filament straight, thiekish, linear, enlarged 

 above and slightly so at base; anther oval, bilobed below and bifid above, 

 introrse, at length become terminal and arcuately curved after the de- 

 hiscence ; cells narrowly oblong ; pollen globose or ovoid. Ovary small, 

 depressed-ovoid-globose, viridescent, 1-locular, several-ovuled ; stigma minute, 

 terminal, sessile. 



Norn. Jap. Hime-nabewari (now). 



Hah. Prov. Higo : Nanataki-mura in Kaoii-masuki-gori (//. Kami- 

 dxuma ! April 25, 1904). 



This species is very closely allied to Croomia paucijlo-ra Torr. et Gray 

 of Nortli-Amersca, from which it differs by the laxly alternate, short- 

 petioled and not, cordate leaves, angustate bracts, sepals with nerves, the 

 rhizome with nodes. 



Citrus Aurantium Linn, subsp. Junos (Sieb.) Makino in But. .Mag., 

 Tokyo, XV. (1901) p. 165, forma verrucosa Makino. 



Branches dark, striate with pale-brown lines ; branches trigono-com- 

 pressed, deep green, glabrous; spine short. Leaves oblong-ovate or 

 elliptical-ovate, shortly attenuated above and with an emarginate tip, obtuse 

 or rounded-obtuse at the base, entire or scarcely crenate above, coriaceo- 

 chartaceous, deep green and shining above, very slightly lighter beneath, 

 pellucid-punctate, 3J-Scrn. long, 2-4|cm. wide ; petiole G-20mm. long, 

 winged above, cuneato-oblanceolate. Fruit globose, somewhat depressed, 

 about 4-5cm. across, yellow, verrucose, broadly umbonate and concave in 

 its centre at the top, with slightly concave oil-glands; rind thick, white 

 and spongy interiorly, aromatic : pulp several-celled, with thin dissepiments, 

 yellowish pale ; vesicles fusiform, with an acid juice ; persistent sepals green, 

 deltoid or depressed-ovato-deltoid, acute. Seeds obovate, compressed ; testa 

 yellowish white, smooth, firm ; tegmen membranaceous, slightly sub-rosy 



