524 NATURAL HISTORY OF PLANTS. 



costate ; cystoliths usually linear ; petiole short or nearly absent ; 

 stipules axillary entire, none the less developed to deficient leaves ; 

 flowers collected in pedunculate or subsessile 1-sexual capitula; 

 capitula solitary or paired at each node ; receptacle narrow or dilate, 

 flat or convex, sometimes fig-shaped, regular or irregular, sub- 

 carneous ; bracts involucrant more or less coalite or more rarely 

 free; inflorescences sometimes exinvolucrate 1 (East India, Oceania, 

 Madagascar, Tropical Africa"). 



13. Pellionia Gaudich. 3 — Flowers monoecious or dioecious. Male 

 calyx 4- or more often 5-partite; segments obtuse, mucronate at top 

 of back, membranous at edge, much imbricate, Stamens 4, 5 ; 

 anther-cells oblong-reniform. Rudiment of gynseceum conical 

 glabrous. Female calyx 4, 5-partite, persistent ; segments equal or 

 unequal, bare or mucronate. Germen elliptical rather compressed 

 (shorter than calyx) ; ovule erect ; stigma sessile penicillate. Achene 

 subcylindrical or compressed smooth, punctulate-painted or more 

 often tuberculate. Seed erect ; cotyledons of sparingly albuminous 

 embryo usually rotundate, twice as long as thick radicle. — Under- 

 shrubs or most often herbs, glabrous or villous ; leaves subopposite ; 

 one of each pair very small or hardly conspicuous, sometimes 

 altogether abortive ; 4 both inequilateral (edge of narrower side 

 looking upwards) ; entire or serrate penniveined or 3-costate ; 

 cystoliths fusiform ; stipules supra-axillary, sometimes elongated ; 

 flowers glomerate or densely or rather laxly cymose; inflorescences 

 sessile or pedunculate axillary, more often solitary ; glomeruli exin- 

 volucrate; floral bracts small, 3-angular lanceolate 5 (Tropical and 

 Temperate Asia, Oceania*). 



1 Hence, according to Wedd., 2 sections, Miq., Fl. Ind. Bat., i. p. ii. 241. — Hassk., Sort- 

 thus : 1. Androsyce. Inflorescence exinvolucrate, Bog., 79. — Wedd., in Ann. Sc. Nat., ser. 4, i. 

 receptacle fig-shaped.— 2. Fuelatostema. Male 188. — Hook, f., Fl. N.-Zel., 227. — Seem., FL 

 inflorescence usually distinct involucrate, re- Vit,, 240. 

 ciptacle commonly discoidal. ' 6 Voy. Uran., Bot., 494. — Endl., Gen., 



• Spec, about 50. Poie., Diet., v. 628 (Pro- n. 1883. — Wedd., Mow.gr., 282, t. 5, 6, A ; 



cm), — Ham., in Don Prodr. Fl. Nepal., 60 Prodr., 165. 



(Procris). — Hook. & Abn., Beech. Voy., Bot., A Whence leaves seem alternate. 



70 (Procris).— Pees , Syn.,\\. 556 (Boehtneria). — 5 Habit of Elatostema, but "inflorescence 



Ad. Be., in Voy. Coq., Bot., 206. — Wall., Cat., rather of Pilea. The essential characters of the 



n. 4628-4636, 7273. — Bl., Bijdr., 509 (Pro- genus are taken from the number of perigynous 



wis). — Wight, Icon., t. 2091, figs. 3, 4 (Pro- female segments." (Wedd., loc. cit.) 

 vris).— Guillem., in Ann. Se. Nat., ser. 2, vii. 6 Spec. 25. Bl., Bijdr., 510 (Procris). — 



183.— Zoll. & Mob., Verz., 74, 102 (Procris).— Wall., Cat., n. 7272 (Procris).— Sieb. & Zucc 



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