520 



NATURAL HISTORY OF PLANTS. 



Female calyx (persisting almost unchanged around fruit) mem- 

 branous, 4-lobed or 4-partite ; segments equal, or sometimes more 

 or less unequal and dissimilar among themselves (as in Fleuryd). 

 Germen finally oblique ovoid; stigma sessile, linear-elongated or rarely 

 short, persistent ; ovule erect or ascending. Achene obliquely ovate 

 or rotundate, sometimes slightly drupaceous and ventricose, more 

 often compressed, sometimes very abruptly narrowed at base ; faces 

 smooth or granulate ; edges equal or thickened. Cotyledons of 

 thinly albuminous embryo rotundate, emarginate at base, sometimes 

 truncate at apex. — Lofty trees or more often small trees, shrubs, or 

 perennial herbs, sparingly or plentifully stinging-hispid; leaves alter- 

 nate, entire or variously dentate penniveined ; cystoliths punctiform ; 

 stipules axillary, 2-ribbed, entire or 2-fid, deciduous ; flowers glomer- 

 ulate ; glomeruli 1-sexual in much branching axillary racemes (male 

 inflorescences in some species double superior) ; pedicels articulate; 

 females sometimes variously dilated or fasciate ; bracts varying in 

 form or 1 (Trq/ncal Asia, Oceania, North America 2 ). 



7. Urera Gaudich. 3 — Flowers monoecious or dioecious. Male 

 calyx 4, 5-partite ; bud subumbilicate. Stamens 4, 5 ; anthers reni- 

 form. Eudiment of gynseceum subglobose, depressed or cupulate. 

 Female calyx 4-lobed ; lobes very unequal ; interior 2 larger ; of the 

 exterior one anterior, very small, or even deficient. Germen straight 

 or oblique subovoid ; stigma sessile peniciliate-capitate, rotundate, 

 or more rarely lanceolate and densely villous-papillose, persistent ; 

 ovule erect or subascending. Achene almost dry, straight or oblique, 

 convex or compressed on either side, smooth or tuberculate, clothed 



1 4 sections, according to Wedd., thus: 1. 

 Sclepsion. Female flowers 4-partite ; segments 

 very unequal; pedicels very often winged. — 2. 

 Sarcojms (Wedd.). Female flower that of Sclep- 

 sion ; fruiting pedicels botuliform thickened. — 

 3. Liscocarpus (Liebm.). Female flowers 

 those of Sclepsion; fruiting pedicels not 

 winged nor fleshy. — 4. Dendrocnide. Lobes of 

 female calyx subequal • fruiting pedicels un- 

 thickened, cylindrical or 0; extreme small twigs 

 ol in florescence sometimes fastigiate-dilated. 



" Spec. 20-25. L. f., Suppl, 418 (Uriica).— 

 RUMPH., Herb. Amboin., vi. t. 20, fig. 1 ( Uriica). 

 — Foie., Lie/., Suppl., iv. 214 ( Uriica) ?— Jacq , 

 Fran,. Bot., t. 33 'Uriica).— Bl., Bijdr., 496, 



504 {Uriica).— Boxb., Fl. Lid., iii. 5S7 ( Uriica). 

 — K., Lid. Sem. Sort. Berol. (1846), 11.— 

 Be>'TH., in Hook. Niger, 517 (Fletirga). — SlEB. 

 & Zvcc, in Abd. d. M-tth.-Pliys. Kl. d. Baier. 

 Akad., iv. p. iii. 214.— Liebm., in Kbn. Densh. 

 Tid. Selsk. Skr., xviii. 60 (Discocarpus). — 

 Wedd., in Ann. Sc. Nat., ser. 4, i. 178 (Urera). 

 — AIiq., Ft. Lid. Bat.,i.]). ii. 230, 2b4(Boehme- 

 ria); PI. Jinir/h., 30 (Dendrocnide). — Seem., 

 Fl. Fit., 238, 239, t. 60 ; Ace. Gov. Miss. Fiti 

 lsl., 427. — Hook, f., in Jonm. Linn. Sac, vii. 

 215. — Walp., in Nov. Act. Acad. Leop.- Carol., 

 \\\., Suppl. ii. 422. 



:< Fug. Uran., Bot., 496. — Wedd., Monogr., 

 143, t. 2, A ; Prod,:, 88. 



