442 DE. A. B. EENDLE— SUPPLEMENTARY 



14. Najas arguta, H. B. K. Nov. Gen. et Sp. i. 371 (1815) ; Eendle in Trans. Linn. 

 Soc. ser. 2, Bot. v. 410 (1899). 



Evidently a Avidely distributed tropical South- American species, at present known from 

 the east coast and from the north-west, but doubtless to be found elsewhere. The 

 following gives the distribution according to present knowledge : — 



Brazil — Ad oram meridionalem flum. Amazonuni, ad ostium fium. Solimoes [Spruce, 



no. 1622) ; Ilhios (near the coast at 15° lat.) {Martius). 

 Colombia— Near Mompox (Eiver Magdalena) [E. B. K. I. c.) ; La Paila [Holtoji) ; 



[Lohb). 

 Ecitador — Guayaquil Kiver (Javneson, no. 544). 



§ 3. Euvaginatce. 



15. Najas minor, All. PL Pedem. ii. 221 (1785) ; Eendle in Trans, Linn. Soc. ser. 2, 

 Bot. V. 410 (1899). 



The following notes are of interest for the distribution of the species : — 



North Germany— Menz bei Bheinsberg, Tiefer Nemitz See {3Iagnus) ; Parsteiner See 



bei Angerniiinde (Ifagnus). 

 Professor Schinz tells me that it is a rare plant in Switzerland. 

 South-east Rl'SSIa — Mouth of the Yolgti, numerous localities {Korshin^ky). 



A fine series recently received by the Department of Botany from the Botanic 

 Museum, St. Petersburg, and remarkable for showing a wide variation in habit in plants 

 collected within a small area. Besides the more typical form with the tufted dichoto- 

 mous habit and rigidulous recurved leaves are forms showing varying degrees of laxity, 

 expressed by elongation of the upper internodes and less rigidulous recurved leaves ; in 

 one form the leaves are suberect and quite straight, hanging limply together. 



Accompanying the increase in laxity we find diminution in size and prominence of the 

 leaf4eeth, which in the extreme form become inconspicuous. The character of the 

 fruit is, however, remarkably constant throughout the series. 



Egypt— Riziares du Delta (Herb. Richard) ^ Cairo and Chonbrah {Sickenherger in 



Herb. Boissier). 

 Tropical Africa— Emin Pasha Expedition (Schiveinfurth, no. 4242). 

 Algeria — Cued (river) Boudjima (Cosson, no. 1185) ; Guebera [Dtirieu in Herb. 



Cosson) ; Senhadja [Permudiere in Herb. Cosson). 

 Tunis— Ad basin Djebel Schkeul (Letournciix in Herb. Cosson). 

 Japan— In Herb. Drake del Castillo, labelled " Tauighemo " no. 471 (? Faurie). 



19. Najas Kingii, Kendle in Trans. Linn. Soc. ser. 2, Bot. v. 416 (1899). 



This species was described from a unique specimen collected by Sir George King in 

 South Andaman. 



Its range is extended in the following specimens, which I saw in the Berlin 

 Herbarium : — 



Tonkin — Mares des environs de Hanoi [Balansa, no. 4651). 



Singapore— (Schlesisch. botan. Tauschver. no. 528). 



