﻿1874.] of the Burmese Flora, 107 



Velvcty-piibosccnt j calyx and involucre toinentoso ; flowers largo, yellow with a dark- 

 purple eye,.. ... ... ... ... ..M. vUifol'tus. 



O O Capsules rounded or obtuse, not win<2,'cd. 

 Capsules glabrous j flowers wliite, hardly an in, in diameter, the petals reflexed ; scabrous 

 herb, ... ... .. .. ... ...H. micranthus. 



Capsules hirsute; all parts, also calyx and involucre densely scurvy tomentose ; involucre- 

 leaflets 10; flowers large, white then rose-coloured; a largj slu'ub, ...H. mutabilis. 

 As preceding, but all parts softly tomentose ; involucre and ca^lyx densely pubescent ; involu- 

 cre-leaflets in Burm. spec. 7, linear (in Malayan 5, ovate-lanceolate), .,.H. venustus. 

 * * Capsules acuminate or acute, not winged. 



% Calyciue lobes 1-3-nerved, without thickened margins, 

 t Leaves densely and softly tomentose. 

 All parts, also calyx and involucre densely tomentose ; pedicels shorter than the pedun- 

 cles ; seeds pubescent, ... ... ... ,,.H. pandurcpfonnis, 



t t Leaves glabrous or roughisb puberulous. 



A Annual herbs. Flowers yellow with dark-purple eye. 

 Seeds tubercled ; leaves glabrous ; stem and petioles prickly, ... ..H . procerus. 



Seeds smooth ; all parts and more especially the calyx and involucre very tubercled- 

 hispid, ... ... ... ... ... ,..//. diver sifolms. 



Seeds smooth ; young parts densely and shortly hispid ; involucre -leaflets puberulous or 

 almost glabrous, ... .. ... ... ...H. Imiarifoliu?. 



A A Shrubs. Flowers from purple to rose-coloured and wliite. 

 Leaves glabrous, longer than the petioles. 

 Pedicels shorter than the petioles, ... . ••• ••• ...H . Si/riacus, 



Pedicels elongate, longer than the petioles, ... ... ...H. Rosa Sinensis, 



% % Calycine lobes with a prominent midrib and (especially when in 

 fruit) with thickened usually indurated borders. 

 O Involucre-leaflets bearing on the back an oblong or linear ap- 

 pendage. 



A Appendage of involucre -leaflets leafy, oblong; flowers 

 pale sulphur with crimson eye. 

 Flowers about 2 in. in diameter, shortly peduucled ; stix)ules lanceolate ; stems stiff'-hairy 

 and usually prickly, ... ... ... ... ...H. fwrcatus. 



Flowers about an in. in diameter, on long slender peduncles ; stipules large, leafy, semi- 

 lunar ; stems prickly, ... .. ... ...H. Surrattensis. 



A A Appendage of involucre-leaflets linear, rarely wanting. 



Flowers white or pale-sulphur with a purple eye, or purple, the calyx-lobes without a gland 



on the midrib, ... ... ••• ... ...H. radiatus. 



O Involucre-leaflets entire, without any appendage. 

 Calyx dry, horny in fruit, the lobes prickly ciliate, with a large gland on the midrib ; 

 seeds glabrous, .. . ... ... ■•. .. H . cannabinus. 



Calyx fleshy, red, the lobes without prickles, usually a little hairy but soon glabrcscent ; 

 seeds shortly hispid, .. . ... ... ... ...H. Sabdariffa. 



Subg. 3. Ahehnosclius. Calyx spathaceous, 5- rarely 3-toothed, deciduous, surrounded by 

 a 5. to 20-leaved free often very deciduous involucre. Seeds glabrous. 



X Involucre-leaflets short and small, deciduous already before opening of 

 the flowers. 

 Flowers rather smal 1, uniform white, ... ... ... . • • ff. ficuhieus. 



Ys y\ luvolucre-lcaflets narrow linear, often numerous aud long ; flowers 



