718 JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. XXV. 



Axillary branches sometimes exceeding 30 mm., very slender and 

 with long iuternodes, the lowest up to 8 mm. Flowers in the axils 

 of reduced leaves. 



ad (23). Much like forma (j. Bracteoles as long as calyx-tube. Calyx 

 teeth acuminate ; stigma reaching their tips. Style shorter than 

 ovary. Petals half as long as the calyx-teeth, ovate acute. 



ad (34) bpikes reaching 25 mm., not dense. Bracteoles shorter than 

 calyx. Petals minute. Stamens subincluded. Style as long as 

 capsule. Stigma almost reaching tips of calyx-teeth. 



Distribution of the species : Tanscaucasus, Afghanistan, India, Cejdon, 

 Java, Tonkin, China, Philippines, Japan. 



14. Rotala rotundifolia nov. comb. — Amniania rotundifolia, lioxb. Fl. 

 Lnd. 1 (1820) 446; DC. Prodr. iii (1828) 79 ; Wight and Arn. Prodr. i (1834) 

 306; Benth. Fl. Hongk. (1861) III ; Clarke in Hook. f. Fl. Brit. lnd. ii (1879) 

 o66; Duthie Fl. Upper Gang. Plain (1903) 349 ; Cooke, Fl. Bomb. Pres. i 

 (1903) .508 —Ameletia rotundifolia, Wight Ic. i (1840) t. 258 ; Dalz. and 

 Gibs., Bomb. Fl. (1861) 96.— Ammannia subspicata, Benth. in Hook. Lond. 

 Journ. Bot. i (1842) 484. — Ameletia subsincata, Benth. in Hook. Kew Journ. 

 Bot. iv (1842) 81. — Rotala rotundifolia, Koehne, in Engl. Bot. Jahrb. i 

 (1880) 175, in Engl. Pflanzenr., iv, 216 (1903) ^l.— Rotala macrandra, 

 Koehne, in Eogl. Bot. Jahrb. i (1880) 176, in Engl. Pflanzenr. iv, 216 

 (1903) 42. 



Stems rooting and creeping extensively, erect part together with the stem- 

 like branches reaching 6-38 cm. Leaves decussate, 3-20 mm. long, 2*5-14 

 mm. broad, sessile or shortly petioled, rotund or obovate, rarely oblong, 

 ubtuse at the apex, subacute or subcordate at the base, penninerved. 



Racemes dense, pedunculate, often three, sometimes one only, sometimes 

 panicled ; pedicels scarcely 1 mm. long ; bracts herbaceous or scarious, 

 ovate or oblong, bracteiform ; bracteoles subherbaceous or scarious, minute. 

 Flowers typically 4-merous. Calyx 1*5-2 mm. long and as broad, campanu- 

 late ; teeth 4, acute, triangular, Avithout interjected folds. Stamens in- 

 cluded or exserted. Petals 4, obovate, twice the length of the calyx-teeth, 

 bright rose. Ovary globose, style half as long as the ovary. 



Capsule 4-3-valved, ellipsoid, a little longer than broad. Seeds brown- 

 yellow, ellipsoid, peltate. 



We have united R. macandra, Koehne, with R. rotundifolia. Koehne 

 founded his species on the greater length of the stamens, a character which 

 18 not at all constant in his subsection Mirl'ooa. 



