ORDER 99. APOCYNACE^E. 269 



2-lobed. Caps, opening by decay, xr Stagnant water. Pet. long, bearing an 

 umbel of small white fls. below the roundish leaf-blade, also oblong tubers. 



1 L,. lacunosum Griseb. Leaves small (1 20, smooth, round-reniform ; seedi 



smooth and shining. N. Eng, to Fla. (Villareia lacunosa Vent.) 



2 I^. tracliyspermum Gray. Lvs. large (350, dotted and pitted beneath; seeds 



muricate about the margins. Md. to Fla. and La. (Menyanthes, MX.) 



OKDER XCVIII. LOGANIACE^E. 



Serbs or sJirubs with opposite leaves, stipules between the petioles or at 

 least a ridge, and with 4- or 5-parted regular gamopetalous flowers. Ovary 

 superior, stigmas as many as the cells. Ft^uit a 2-celled capsule, or a 1-2- 

 seeded drupe. Seeds winged or peltate, with albumen. Fig. 47. 



* Delicate, twining shrubs, with large yellow flowers. S GELSEMIUM. 1 



* Lo w herbs. x Flowers scarlet, tubular, with one style SPIGELIA. 2 



x Flowers small, white, 5-parted, in 1-sided racemes ,, MITREOLA. 3 



x Flowers small, white, 4-parted, in axillary cymes POLYPRKMUM. 4 



1. GELSEMIUM. Juss. YELLOW JESSAMINE. Cor. bell-funnel-form 

 with 5 short rounded lobes. Sta. 5, now longer and now shorter than the 

 style (dimorphous). Caps, flattened, twin, cells each with 4 6 winged sds. 

 i> Very slender, with numerous flowers. The stipules a mere ridge. 



G. sempervireiis Ait. Woods and banks, Ya., and S., overrunning bushes and low 

 trees. Leaves thick, shining, lanceolate. Flowers 1'. March May. 



2. SPIGELIA, L. PINK-ROOT. Calyx seg. linear-subulate. Cor. nai- 

 rowly funnel-form, limb 5-cleft. Anth. 5, convergent. Caps, twin-lobed, 

 few-seeded. Herbs, with the flowers sessile in terminal spikes. Fig. 47. 



S. Ittarilaiidiea L. Stem square, erect, simple; leaves sessile,- ovate-lanceolate ; 

 spike scorpoid, uncoiling as the 38 handsome flowers expand ; corolla H 2' long. 

 n Thickets, Pa. to 111., and S. June. McrMcinal. 



3. MITREOLA, L. Corolla tubular, short, 5-cleft, hairy in the throat 

 Sta. 5, included. Ovary 2-celled, styles 2, united only at top with 1 stigma. 

 Capsule 2-horned, GO -seeded. @ Flowers in several scorpoid spikes at 

 top of a long terminal peduncle. June August, 



1 M petiolata T. & G. Branching ; leaves ovate to lanceolate, tapering at base to 



a petiole ; raceme loose-flowered. Va., and S. 1 2f. 



2 M. sessilifolla T. & G. Nearly simple ; leaves oval to elliptical, sessile, shorter 



than the internodes : raceme close-flowered. S. C. to Fla. 1018'. 



4. FOLYFREMUM, L. Calyx seg. 4, subulate. Corolla broad bell- 

 form, lobes a little unequal, obtuse, throat bearded. Stamens 4, included. 

 Stigma subsessile. Capsule ovoid. (T) Smooth, diffusely branched from 

 base, with linear-subulate leaves. Flowers sessile. 



P. p roc umbens L. Dry fields, Va., and S. 612'. In dense patches^ May Sept. 



ORDER XCIX. APOCYNACE^. DOG-BANES. 

 Plant with an acrid, milky juice, entire, exstipulate, mostly opposite Iv* 



