51 



thickened : achenium triquetrous, largish, far exceeding the calyx, 

 angles acute or obtuse, sometimes toothed or expanded into a 

 coriaceous wing, pericarp crustaceous, thin : embryo axile, straight, 

 albumen mealy. — Herbs : stem branched, erect : ochrese and 

 bracts thinly membranaceous, obliquely truncated, beardless: 

 leaves cordate-triangular or hastate, palminerved, petioled, or 

 upper ones subsessile, stem-clasping : racemes subdichotomously 

 cymose or panicled : pedicels fascicled, thin, jointed : flowers white 

 or rose. 



(1) F. TEIANGtTLAEE. (MetSSIl.) 



Ident. Meissn. ap. Wall. pi. As. rar. III. p. 63. — Dec. 1, c. 

 p. 144. 



Syn. P. dibotrys, Bon prod. flor. Nep. p. 73? 



Spec. Chab. Leaves cordate-triangular or hastate, obtuse- 

 angled, upper ones less elongated, nerves beneath and petioles at 

 the apex puberulous : panicles long-peduncled, dichotomous : 

 racemes conjugate, separate, divaricated, recurved : angles of the 

 half-exserted achenium entire, very obtuse, thickened, faces 

 ovate. 



Assam. 



OBDER GXXXI. LAUBACE^. 



Flowers hermaphrodite or dioecious by abortion, sometimes 

 polygamous or monoecious, regular : calyx gamosepalous, free, 

 herbaceous or corolline, rotate or infundibular or urceolate, 

 6 — 4 — 9-cleft, lobes imbricated in two rows equal, or outer 

 ones smaller, deciduous or seldom persistent, tube generally 

 persistent, usually more or less increased, and changed into 

 a small cup surrounding the base of the fruit : stamens in- 

 serted at the base or throat of the calyx, definite, 3 — 4- 

 seriate, in the female flowers changed into glands or scales or 

 petaloid straps, in male or hermaphrodite ones partly barren 

 or seldom all fertile : filaments free or very rarely monadel- 

 phous, filiform, usually shorter than the anthers, sometimes 

 confluent with the latter : anthers ovoid or oblong, sometimes 

 acuminated by a connectivum produced beyond the cells, 

 2-celled or 4-locellate, valves dehiscing from base to apex : 

 stamens of the fourth series usually sterile, sometimes more 



