210 ORDER 81. PRIMULACE.E. 



ORDER LXXVIIL SAPOTACE^. SOAPWORTS. 



Trees or shinibs, mostly with a milky juice, and simple, entire leaves. 

 Flowers small, regular, perfect, mostly in axillary clusters. Calyx free, per- 

 sistent. Corolla hypogynous, short, stamens usually as many as its lobes 

 and opposite to them, inserted into its tube along with one or more rows 

 or appendages. Anthers extrorse. Ovary 4-12-celled, with a single ana- 

 tropous ovule in each cell. Seeds large. (Included TheophrastaceaB.) 



Corolla 6-8-cleft, with a pair of appendages at each sinus. S. Fla MIMUSOPS Sieberi DC. 



* Corolla 5-cleft, a with a single appendage at each sinus. S. Fla SIDEROXYLON palUdum Jq. 



a with a pair of, &c. b Sterile stamens fringed. S. Fla.. .DIPHOLIS nahci/lia A. DC. 

 b Sterile stamens entire BUMELIA. 1 



BUMELIA, Swartz. Cal. 5-partccl. Cor. 5-cleft, with a pair of ap- 

 pendages between the lobes. Sta. 5, opposite the lobes, alternate with 5 

 petaloid, sterile stamens. Ov. 5-celled. Sty. filiform. Drupe ellipsoid, 1- 

 seeded, exalbuminous. J) ^ Wood hard and firm. Lvs. entire, of a firm 

 texture. Fls. aggregated, white or greenish. Our species are all more or 

 less spiny, and with very tough twigs. 



* Leaves hairy beneath Nos. 1,2. ** Leaves glabrous both sides .... Nos. 3, 4 



1 B. tenax Willd. Silky-ferruginous; Ivs. wedge-oblong to obovate,'Obtuse ; clusters 



20-35-flwd., with slender pedicels ; drupe oval, corrugated. Sands, S. 20 30f. Jn.,Jl. 



2 B. lanuglnosa Pers. Woolly-ferruginous ; Ivs. oval, acutish. thin ; fascicles 6-12- 



flwd., with short pedicels ; drupe globular. Damp. S. 111., and S. 8 12f. June, Jl. 



3 B. lycioides Gaert. Lvs. wedge-elliptical, rather acute ; clusters densely 20-30-flwd., 



ped. shorter than petioles (2-3"). Damp, Ky., and S. 15-25f. Branches virgate. May. 



4 B. reclinata Vent. Lvs. obovate, obtuse, small (9 12'0 ; clusters 15-20-fl wd. ; ped. 



slender, half as long as the leaf. River banks, S. Car. to Fla. A straggling shrub. Jn.,Jl. 



ORDER LXXXI. PRIMULACE^E. PRIMWORTS. 



Herbs low, w T ith the leaves mostly radical or mostly opposite. Flowers 

 5- (rarely 4-6-) parted, regular and monopetalous. Stamens 5, inserted on 

 the corolla tube and opposite to its lobes. Ovary 1-celled, with a free cen- 

 tral placenta. Style 1. Stigma 1. Capsule 1-celled, co-seeded. Seeds with 

 fleshy albumen. Figs. 22, 133, 249. 



Ovary half-inferior. Capsule opening by valves. Leaves undivided. (Tribe IV.) 

 g Ovary superior. * Capsule opening by valves. Leaves pectinate. (Tribe I.) 

 * Capsule opening by valves. Leaves undivided. (Tribe II.) 

 * Capsule opening by a lid. Leaves undivided. (Tribe III.) 



I. HOTTONIEjE. Corolla salver-form. Plants floating. Leaves verticillate HOTTONIA. 1 



1L I'RIMULE^E. a Acaulescent. b Corolla limb spreading, tube cylindrical. ...PRIMULA. 2 



ft Corolla limb spreading, tube ovoid ANDROSACE. 3 



b Corolla lobes reflexed. c Stain, exserted. . .DODECATHEOX. 4 



c Stam. included. . .CYCLAMEJT. 5 



a Caclescent. <f Corolla wanting. Leaves opposite GLAUX. 6 



d Corolla 7-parted. Leaves in one whorl TRIEXTALIS. J 



d Cor. 5- or 6-parted. Lvs. opp. or whorled. . . .LYSIMACHIA. 8 



III. ANAGALLIDE^E. c Flowers 5-parted, scarlet. Leaves opposite ANAGALLIS. 9 



Flowers 4-parted, white ? Leaves scattered CENTUNCULUS. 10 



IV. SAMOLE^E. Flowers 5-parted. Leaves alternate SAMOLUS. 1 1 



