120 



entire, somewhat shorter than one-half of the ovary, smooth, thin, 

 white. Ovaries free, erect, longitudinally parallel, ovate-oblong, slightly 

 shorter than the petals, somewhat compressed, sessile, gradually attenuated 

 above, smooth, with a line of the ventral suture in the inner surface ; 

 style terminal, very short, with a minute punctiform stigma. Ovules in 

 2 rows, 10-14 in each ovary, minute, ascending, cylindrical-oblong, anatro- 

 pal, with a short funicle. Follicle 4, erect-patent, dehiscent along the 

 ventral suture ; carpel membranaceous, nerveless. Seeds minute, in 2 rows, 

 10-14 in each follicle, cylindrical-oblong, very slightly arcuate, obtuse on 

 both ends, very slightly broader below, J mm long, with a very short funicle ; 

 testa light brick-coloured, longitudinally striate, exalbuminous ; embryo cy- 

 lindrical-oblong, white ; cotyledons about one-third the length of the thicker 

 caulicle. 



Bulliarda aquatica DC. in Bull. Soc. philom. III. n. 49, p. 2, et 

 Prodr. III. p. 382. 



Crassula aquatica Schonl. in Engl, et Prantl Naturl. Pflanzenfam. 

 III. 2, p. 37. 



Bulliarda Linnaei Spreng. Syst. Veget. I. p. 497. 



Tillcea simplex? Makino in Bot. Mag., Tokyo, II, 1888, tab. IX. 

 non Nutt. 



Elatine ietrandra Maxim, in Mel. biol. XII. p. 723. 



Nom. Jap. Ad?Aima-tsumehusa (T. Makino). 



Hab. Prov. Tokaciii in Hokkaido (Yezo) : Muddy banks of Kiver 

 Toberi (K. Miyabe ! Aug. 16, 1884, herb. Sc. Coll. Imp. Univ. Tokyo, 

 and herb. T. Makino)) Prov. Musashi: Omiya near Horinouchi (T. Maid- 

 no ! S. Ikeno ! June 3, 1888), Bank of Kiver Tama-gawa near Idzumi 

 ($. Okubo ! June 20, 1888 ; T. Makino ! June 27, 1888), Nakagawara 

 (T. Makino ! May 27, 1894), Shimo-Komagome in Tokyo (T. Makino ! 

 June, 1896), Bank of Kiver Tama-gawa near Yaguchi (S. Okubo, June 4, 

 1898). 



This species is found sparsely or densely growing in muddy places and 

 flowers during May-June, and the figures of the Japanese form were pub- 

 lished in the Botanical Magazine, Tokyo, II. tab. IX. as cited above, and 

 my Illustrations of the Flora of Japan, I. n. 5, tab. XXXIII. 



Elatine tetrandra Maxim. (1. c.) must be properly made a synonym of 

 Tillcea aquatica Linn. From the Author's diagnosis, and also from the 

 inspection of the original plant collected and distributed by Prof. Dr. K. 

 Miyabe, I should like to make the proposed change. 



(To be continued.) 



