CL. POLEMONIACEiE. 56;} 



2-celled, dehiscence longitudinal. Ovaet with 2 more or less complete cells ; styles 

 2, terminal, distinct ; stigmas capitate ; ovules numerous, anatropous, horizontal or 

 pendent. Capsule with 2 Talres, sometimes septiferous, leaving the placentiferous 

 septum free, sometimes loculicidal and semi-septiferous. Seeds numerous, minute, 

 angular ; testa membranous, loose, striate or areolate. Bmbeto straight, in the axis 

 of a fleshy scanty albumen ; radicle near the hilum, centripetal or superior. 



[Arrangement of Hyd/roleaceoe by Choisy in De Candolle's ' Prodromus ' : — 



Teibe I. Htdrobej!. — Capsule 2-celled, septicidal; septum free, single, with a fungous 

 placenta on each face. Hyd/rolea. 



Tbibb II. Nambj). — Capsule 1-3-celled, looalicldal; septum double, with lamellar pla- 

 centas. Nama, Wigandia, &c.] 



We have indicated -the affinities oi Hydrokacece with Polemoniacece and Hydrophyllets (see these 

 families). They are common in tropical and extra-tropical America; but Sydrolea itself is the only- 

 representative in the Old World, where it inhabits wet places in the tropics. 



CL. POLEMONIACE^. 



(PoLEMONiACE^, Vcntenat. — Polemonide^, B.C. — Cobjeace^, Bon.) 



CoEOLLA monopetalous, hypogynous, regular, isostemonous, aestivation contorted. 

 Stamens 5, inserted at the middle or on the top of the corolla-tube. Ovaet S-celled ; 

 OVULES solitary and erect, or numerous and ascending. Capsule B-valved. Embeto 

 albuminous ; EADICLE superior. 



Herbaceous plants, rarely sub-woody or woody, with watery juice. Leaves 

 alternate, the lower sometimes opposite, exstipulate. Elowees 5 , rarely solitary, 

 usually in a panicle or corymb or involucrate head. Calyx monosepalous, 5-fid. 

 CoEOLLA monopetalous, hypogynous, infundibuliform or hypocrateriform, limb 

 5-partite, aestivation contorted. Stamens 5, inserted on the corolla-throat or tube, 

 and alternate with its lobes; awi^ers 2-celled, dehiscence longitudinal. Ovaet 

 seated on a more or less obvious glandular disk, 3-5-celled ; style terminal, 3-fid, or 

 5-lid at the top, papillose on the inner surface ; ovules either solitary and erect at 

 the inner angle of the cell, anatropous, or numerous, biseriate, peltate by the ventral 

 face, ascending and semi-anatropous. Capsule membranous or sub-woody, rarely 

 fleshy, of 3-5 valves septiferous in the middle. Seeds angular or compressed ; hilum 

 basilar or ventral ; testa sometimes formed of mucilaginous cells with unroUable 

 tracheae. Embeto straight or nearly so, in the axis of a fleshy albumen ; cotyledons 

 foliaceous ; radicle inferior. 



[Polemoniacece have been divided by A. Gray into two groups : — 



1. Stamens unequally inserted. *PMox, *Gollomia (including *Leptosip7ioii), Nanarratia, 

 Hugelia, *Gillia, Leptodactylon. 



2.' Stamens equally inserted. *Qilia, *Polemonium, *Loeselia, *Ganiua, *Cobxa. — Ed.] 



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