42 ^ NATURAL HISTORY OF PLANTS. 



caducous, stamens 5, alternipetalous, inserted between as many 

 oppositipetalous lobes of the disk, very perigynous ; filaments free ; 

 anthers introrse cordately 2-dymous, 2-rimose. Germ en inserted 

 at bottom of receptacle, inferior at base only, otherwise free; 

 cells 6, alternipetalous, more or less incomplete ; ovules in each 

 2, basilar ; style cylindrical, apex divided into 5 short stigmatose 

 branches. Fruit inferior, crowned with calyx, dry or crustaceous, 

 indehiscent, 1 -sperm ous ; testa of exarillate seed membranous ; 

 albumen scarce ; cotyledons of straight embryo oblong. — Yery ramose 

 (cricoid) shrubs ; leaves (evergreen) alternate closely packed small 

 coriaceous enervate subsessile ; stipules minute glanduliform, cadu- 

 cous ; flowers^ in compound terminal racemes; pedicels articulate, 

 bracteolate under the apex.^ [Texas ^ North Mexico?) 



27. Glossopetalon A. Gray.* — Flowers hermaphrodite; receptacle 

 lined with thin glandulous cupular 10-crenate disk. Sepals 5, short 

 persistent. Petals 5, alternate, much longer, linear ligulate, marcescent. 

 Stamens 10, 2-seriate ; filaments inserted in hollows of disk peri- 

 gynous, short free ; anthers short introrse. Germen free, im- 

 mersed at base in central disk, 1-locular; style very short, apex 

 capitellate ^ stigmatose ; ovules 2, subbasilar suberect ; micropyle 

 extrorsely inferior. Fruit dry coriaceous (finally 2-valvate ?) 

 obliquely ovoid apiculate, much striated longitudinally ; seeds 1, 2, 

 ascending; fuuicle short dilated to a small 2-lobed aril ; testa short ; 

 embryo...? — An extremely ramose and spinose glabrous shrub; 

 branches punctulate ; leaves alternate small entire subspathulate, 

 exstipulate ; floral leaves squamiform ; petiole much dilated at base ; 

 flowers^ axillary pedunculate, bracteate at base. [Texas ^ New 

 Mexico!^) 



28. Oanotia Torr.^ — Flowers regular hermaphrodite. Calyx 

 small, glandulously decurrent at base, 5-fid, valvate, persistent. 

 Petals 5, sessile, imbricated. Stamens 5, alternipetalous, hypo- 

 gynous ; filaments free subulate, persistent ; anthers cordate shortly 



1 Small, white. 453.— Walp. Aun. iv. 425 ; vii. 683. 



2 A genus resembling some Rhamnacece in •* Proc.Amer.Acad.-si.lZ (Sapindaceae ?) PI. 

 tlie form of its receptacle and its ovules, differ- Wright, ii. 29, t. 12, B.— B. H. Gen. 368, n. 31. 

 ing chiefly in its alternipetalous stamens. The ^ Stigma hence emarginate subreniform. 

 structure of its flowers strongly recalls certain ^ Small, white. 



Myrtacecc, from which it is distinguished gene- ^ Spec. i. G. spinescens A. Grit. — Walp. 



rally by the leaves and the germen not being Ami. iv. 426. 



free. ^ JFippl. Exp. Bot. 12. — H. Bn. Adansoniaf 



3 Spec. 3, 4. TuRCZ. Bull Mosc. (185S), i. x. 18. 



