VEKBENACE^. (VERVAIN FAMILY.; 401 



Ixceeding the lanceolate or linear calyx4ohes. — Rich soil, Penn. to Wise, south 

 ko Fla. aud Tex. July - ISept. — Var. cleistAntha, Gray. Leaves commonly 

 Narrower aud obloug ; flowers for most of the season cleistogamous. — Com- 

 mon with the ordinary form. 



3. DIANTHERA, Gronov. Water-Willow. 



Calyx 5-parted. Corolla deeply 2-lipped ; the upper lip erect, notched ; the 

 lower spreading, 3-parted, external in the bud. Stamens 2 ; anthers 2-celled, 

 the cells separated and somewhat unequal. Capsule obovate, flattened, con- 

 tracted at l)ase into a short stalk, 4-seeded. — Perennial herbs, growing in 

 water or wet places, with entire leaves, and purplish flowers in axillary pe 

 duncled spikes or heads. (Name formed of 5ts, </owWe, and avdripd, anther , 

 the separated cells giving the appearance of two anthers on each filament.) 



1. D. Americana, L. Stem 1-3° high; leaves linear-lanceolate, elon- 

 gated ; spikes oblong, dense, long-peduncled ; corolla 4 - 5" long. — In water, 

 N. W. Vt. to Wise, south to S. C. and Tex. July - Sept. 



Order 81. VERBENACE^. (Vervaix Family.) 



Herbs or shrubs, luith opposite leaves, more or less 2-lipped or irregular 

 corolla, and didynamous stamens, the 2-A^-celled (in Phryma 1-celIed) 

 fruit dry or drupaceous, usually splitting ivhen ripe into as many 1-seeded 

 indehiscent nutlets; differing from the following order in the ovary not 

 being 4-Iobed, the style therefore terminal, and the plants seldom aro- 

 matic or furnishing a volatile oil. — Seeds with a straight embryo and 

 little or no albumen. — A large order in the warmer parts of the world, 

 sparingly represented in cool regions. 



Tribe I. VERBENE.^. Ovary 2 -4-celled, with an erect anatropous ovule In each cell. 



1. Verbena. Flowers in spikes or heads. Calyx tubular. Fruit splitting into 4 nutlets. 



2. L,ippia. Flowers in spikes or heads. Calj'x short, 2-cleft. Fruit splitting into 2 nutlets. 



3. Callicarpa. Flowers in axillary cymes. Calyx short. Fruit berry-like, with 4 nutlets. 

 Tribe II. PHRYME^. Ovary 1-celled ; ovule erect, orthotropous. 



4. Phryma. Flowers in slender spikes. Calyx cyhndrical, 2-lipped. Fruit an achene. 



1. VERBENA, Toum. Vervain. 



Calyx tubular, 5-toothed, one of the teeth often shorter than tne others. 

 Corolla tubular, often curved, salver-form ; the border somewliat unequally 5- 

 cleft. Stamens included ; the upper pair occasionally witliout anthers. Style 

 slender; stigma mostly 2-lobed. Fruit splitting into 4 seed-like nutlets. — 

 Flowers sessile, in single or often panicled spikes, bracted ; produced all sum- 

 mer. (The Latin name for any sacred herb; derivation obscure.) — The spe- 

 cies present numerous spontaneous hybrids. 



§ 1. Anthers not appendaged ; flowers small, in narrow spikes. 



* Spikes filiform, icith flowers or at least fruits scattered, naked, the inconspic- 

 tious bracts shorter than the calyx. 



V. officinXlis, L. (European V.) Annual, glabrous or nearly so, 



loosely branched (1-3° high); leaves pinnatifld or 3-rleft, ohlong-lanceolate, 



