Ammannia.~\ LXI. LYTHRACE.E. (C. B. Clarke.) 571 



JBoiss. Fl Orient, ii. 743 ; Ddz. $ Gibs. Bomb. Fl. 97 ; Kurz in Journ. As. Soc. 

 1877, pt. ii. 85. 



Throughout INDIA on the plains. DISTRIB. Afghanistan. Persia. Australia. 



Glabrous, very erect, 6-24 in. ; branches numerous, sharply quadrangular. Cauline 

 leaves 1-1^ in. Bracteoles on the cyme-branches most minute, linear. Calyx cam- 

 panulate, hemispheric or scarcely elongate ; teeth 4, short-triangular. Petals 0, or 

 small and caducous. Stamens 4, 6 or 8. Capsule often ultimately red, globose, not 

 enclosed by the calyx. Seeds half -ellipsoid, excavated on the plane face. Very 

 closely allied to A. senegalensis and united with it by Mr. Hiern, perhaps correctly, 

 but the two forms do not meet or pass into each other in India. Cryptotheca dicho- 

 toma, Blume Bijd. 1128; DC. Prodr. iii. 76 (Ammannia microcarpa, DC. Prodr. iii. 

 77), from Java and Timor, has been united with A. midtiflora Roxb. by Kurz in 

 Journ. As. Soc. 1871, pt. ii. 56, but differs in the much more elongate calyx-tube and 

 larger cauline leaves : it is certainly very near A. multiflora. 



17. A. octandra, Linn. f. Suppl. 127; leaves opposite linear-oblong 

 subauriculate at the base, cymes very shortly peduncled 3-o-flowered, calyx in 

 fruit large campauulate 4-angled with 8 distinct ribs. Roxb. Cor. PI. t. 133 ; 

 Fl. Lul i. 425 ; DC. Prodr. iii. 80 ; Wall. Cat. 2097 ; W. $ A. Prodr. 304 ; 

 Blume Mus. Hot. ii. 132 ; Dalz. $ Gibs. Bomb. Fl. 97 ; Kurz in Journ. As. Soc. 

 1877, pt. ii. 86. Ammanella linearis, Miq. Fl. Ind. Bat. i. pt. i. 619. Dip- 

 lostemon octandrum, Miq. I.e. 615. 



DECCAN PENINSULA; Bottler; Heyne; Wight; G. Thomson. CEYLON; Thwaites. 

 CHITTAGONG; Kurz. DISTRIB. Malaya. 



Erect, 6-18 in., branches quadrangular, often scabrous. Cauline leaves 12 in., 

 sometimes very narrow. Calyx in fruit | in., often minutely pubescent or scabrid, 

 nearly truncate ; teeth 4, small. Petals in., obovate, rose-coloured. Stamens 8, 

 filaments long, dark-red. Capsule somewhat ellipsoid, as long as the calyx. Seeds 

 subhemispheric. This species is reduced to A. latifolia Linn, by Griseb. Fl. Brit. 

 West Indies 270 ; but the West Indian specimens, though like the Indian in leaves 

 and habit, are entirely without the subalate angles of the ripe fruit which form the 

 essential character of A. octandra. 



18. A. sub rotund a, Wall, ex Kurz in Journ. As. Soc. 1871, pt. ii. 55; 

 " leaves sessile almost orbicular pinnate-nerved, flowers on slender short pedi- 

 cels forming shorter or longer slender racemes." 



BURMA or EAST BENGAL ; Kurz. DISTRIB. Ava. 

 NQ seen : diagnosis copied from Mr. Kurz. 



2. HYBROLYTKRUBl, Hook.f. 



A glabrous aquatic herb. Lower leaves whorled, linear. Spikes exsert out 

 of the water with oblong bractiibrm leaves. Flowers whorled, subsessile in the 

 axils of bracts, lower whorls distant, upper approximate, often with opposite 

 bracts ; bracteoles 2, subulate. Calyx campanulate ; teeth 4, triangular ; ac- 

 cessory teeth 0. Petals 4, inserted between the calyx-lobes. Stamens 4, on the 

 middle of the calyx-tube. Hypogynous scales 4, bifid. Ovary in the bottom 0f 

 the calyx, free, 2-celled ; style simple, stig ma capitate j ovules not many, pla- 

 centas axile. Capsule small, globose, 2-celled. Seeds 3 or 4 in each cell, ovoid, 

 concave. A genus only separable from Ammannia by habit : for hypogyncus 

 glands exist in Amm. rotundifolia. 



