Sydrocotyle.'] lxx. UMBEiiwraRS). (C. B. Clarke.) 667 



SiEiKqBS III. Dlplozygtee. J7m6e& compound. Secondary ridges of the 

 fruit prominent, primary equally or less prominent or inconspicuous. 



* Frmt glabrous. 



Fruit globose. Bracts 34* Cobiandhttm. 



Fruit narrowly oblong. Bracts slender, simple 34.** CuMnnui. 



*• Fruit hirmte or setose. 



Bracts pinnate. Seed plane on the inner face 35. Daucus. 



Bracts linear, or 0. Seed grooved on the inner face .... 36. CixrcAiis. 

 Bracts linear-lanceolate, membranous 37. Psasuiooeton. 



1. KVDROCOTiriiE, Lmn. 



Prostrate herbs, rooting at the nodes. Leaves (in the Indian species) cordate 

 or hastate, not peltate, round or 5-9-gonal, suhentire or palmately lobed, pal- 

 mate-nerved, long-petioled ; stipules small, scarious. Umbels (in the Indian 

 species) simple, small; bracts small or 0; flowers white, sometimes uni- 

 sexual. Calyx-teeth or minute. Petals entire, valvate or imbricate. Fruit 

 laterally compressed, commissure narrow ; carpels laterally compressed or sub- 

 pentagonal ; lateral primary ridges concealed within the conmiissure, or distant 

 therefrom and prominent ; vittse 0, or most slender, obscure ; carpophore 0. 

 Seed laterally compressed. — Disibib. Species 70 ; in wet places in tropical and 

 temperate regions, more numerous in the Southern Hemisphere. 



Sscnon^ I. Eu-Kydrocotyle. Petals acute, valvate, Secondary ridges 

 0. Pericarp not thickened. 



1. K. javanlca, Thwnh. Dissert, ii. 415, t. 3; leaves 1-3 in. diam. cor- 

 date crenate, subentire or lobed to the middle, petiole laxly pubescent, peduncles 

 long upper often clustered, fruit much compressed not pentagonal. I)C. Prodr. 

 iv. 67 ; Miq. Fl. Ind. Bat. i. pt. i. 734 ; Kurz in Jowm. As. Soc. 1877, pt. ii. 

 113. H. luspida, Bern Prodr. 183. H. nepalensis, Sook. Exot. Fl. t. 30 ; 

 Wall. Cat. 661 ; DC. I. c. 65 ; Miq. I. c. 735. H. zeylanica, DC. I. c. 67 ; W. ^ 

 A. Prodr. 366 ; Miq. I. c. 734. H. hirsuta, Blume Bijd. 884. H. polycephala, 

 W. 8f A. Prodx: 366; WigU Ic. t. 1003. H. hirta, R. Br. Far. acuiiloba, F. 

 MueU. ; Benth. Fl. Austral, iii. 340. H. Heyneaoa, Wall. Cat. 563. H. stri- 

 gosa, Ham. in Wall. Cat. 7219. 



' HnnALiYA ; from Kashmih to Bhotan, alt. 2000-8000 ft. ; Khasia Mts., alt. 

 2000r6000 ft., common. Mts. of Malabab and Ceylon, common. Pegu and Te- 

 kasserim:, alt. 2000-5000 ft. — Disteib. Malaya to the Philippines and Australia, 

 Mozambique. 



Leaves 1-3 in. diam., pubescent or glabrous. Peduncles |-2 in., lower solitary, 

 leaf-opposed. Umbels many-flowered ; bracts minute . lanceolate scales among 

 the pedicels ; pedicels O-J in., glabrous. Frmt ^ in,, orbicular or snbquadrate, 

 ieticulate-rugose or smooth (sometimes deformed, enlarged, obovoid, corky); 

 lateral primary ridges commissural, intermediate faint or ; pericarp hard, thin. — 

 Wruits exceedingly uniform even in minute characters from the Himalaya to Ceylon, 

 Thnnberg describes H. javaniea as glabrous, but all the specimens so named from Java 

 have at least the petioles and peduncles pubescent and are identical with the Indian, 

 U. hirmia, Blume, is a form with fulvous pubescence abundant in the Eastern Hima^ 

 \a.y&.^H. polycephala, Wight 111. t. 117, fig. 1, represents the carpels as siibpenta- 

 gonal and little compressed laterally, and perhaps was taken from H. rotundifolia. 



