24 SYNOPSIS OF ORDERS AND GENERA. 



Order XXXVIII. CONVOLVULACE^. 



Herb, stem trailing. Calyx 5-parted. Corolla bell-shaped ; limb spreading. 

 Stamens 5 within the tube. Style simple. Stigma capitate, 2-lobed. Capsule 

 4-celled, 4-valved, 4-seeded. Juice milky. 



Sweet Potato, Ipomoea. 



Order XXXIX. SOLANACE^. 



Herb. Calyx 5-6-parted. Corolla rotate, tube short. Stamens 5-6, ex- 

 serted. Anthers connate, dehiscing lengthwise. Berry many-seeded. 



Tomato, Lycopersicum. 

 Herb. Calyx urn-shaped, 5-toothed. Corolla funnel-shaped, 5-lobed. Sta- 

 mens 5. Capsules 2-celled, 2-4-valved. Flowers terminal. 



Tobacco, Nicotiana. 

 Herb, 2 to 5 feet high, 3-forked. Leaves in pairs, unequal, entire, pointed. 

 Petioles short, 8-12 inches long. Flowers large, axillary, pendent, brownish 

 purple. Calyx leafy, 5-parted. Corolla bell-shaped, 5-cleft. Stamens shorter 

 than the corolla. Fruit a berry, globular, 2-celled, black when ripe. 



Deadly Nightshade, Atropa. 

 Herb, 18 to 30 inches high, smooth, branching. Leaves ovate, smooth, 

 entire. Flowers solitary, axillary, white. Calyx tubular, with 5 small divisions. 

 Corolla wheel-shaped, in 5 lapping pointed divisions. Fruit a berry, with an 

 inflated pericarp, globose, conical, or oblong, solitary or in pairs. 



Red Pepper, Cayenne Pepper, Capsicum. 

 Herb, erect, prostrate, or assurgent. Stem 2-4 feet long, angular, and 

 branched towards the top. Leaves interruptedly pinnate, every alternate pair 

 of leaflets very small. Flowers blue or white. Calyx persistent, 5-parted. 

 Corolla rotate, bell-shaped, tube short ; limb 5-cleft. Anthers connivent. Fruit 

 a globular berry, 2-celled, many-seeded, roots swelling into tubers. 



Potato, Solanum 



Order XL. PEDALINE^. 



Herb. Leaves opposite or alternate, simple exstipulate. Flowers perfect, 

 irregular, axillary, solitary, racemed or spiked, usually with two bracts. 

 Calyx 5-lobed, sometimes split on one side. Corolla sympetalous. Tube 

 cylindrical. Stamens 5 on the corolla, 1 sterile, 4 fertile ones didymous. 

 Ovary superior, 1-2-4-celled. Fruit a drupe. 



Sesame, Sesamum. 



Order XLI. VERBENACE^. 



Tree, 80 to 150 feet high, 3 to 6 feet in diameter, branchlets 4-sided. Leaves 

 opposite on ternate verticils, rough above, doAvny beneath, entire. 1-2 feet 

 long, 6-18 inches wide. Flowers small, sessile, white, in terminal compound 

 dichotomous panicles. Fruit lens-shaped, 4-celled drupe. Calyx bell-shaped, 

 short, 5-6-cleft. Tube swollen below, contracted near the mouth. Corolla 

 tube short, limb gaping, 5-6-cleft, lobes short. vStamens 5-6, attached to 

 corolla near the ba.se. 



Teak, Tectona. 



Order XLII. LABIATE. 



Herb, 15 to 20 inches high or more, branching near the ground. Leaves 

 crowded near base of branches, whitish, downy, oblanceolate, tapering to the 



