VERVAIN FAMILY. 241 



5. DIANTHERA. (From Greek for doMe anther, alluding to the two 

 separated cells on each filament.) PI. all summer. % 



D. OV^ta. Muddy banks of streams S. : 4' -8' high, smooth, with lance- 

 ovate short-petioled leaves longer than the 3-4-flowered peduncles in their 

 axils, and small pale purple flowers. 



D. Americana. Wet borders of streams : 2° high, smooth, with long 

 linear-lanceolate leaves, and long peduncles (4' -6' long) bearing an oblong 

 spike of pale purple flowers. 



78. VERBENACE-ffi, VERVAIN FAMILY. 



Plants with opposite (or sometimes whorled) leaves, differing 

 from the other orders with irregular moiiopetalous and didynaraous 

 or tetrandrous flowers iy the ovary not 4-lobed and with a single 

 ovule m eaoh of its (1-4) cells, the fruit either fleshy or when 

 dry at length splitting iiito as many 1-celled indehiscent nutlets. 



Besides the following some species of Clerodendron are culti- 

 vated, in choice conservatories. 



§ 1. Flowers in heads^ spikes^ or racemes^ thejlowers eapailding-Jrom'below upwards. 



1. PHRYMA. Flowers in slender loose spikes. Calyx cylindrical, 2-lipp^d, the 



upper lip of 3 slendei'-pointed teeth, the lower short and 2-toothed. Corolla 

 tubular, 2-llpped, the upper lip notched, lower larger and 3-lobed. Stamens 

 included. Ovary 1-celled, forming a simple akene in the calyx. Herb. 



2. VERBENA. Flowers in ispikes or heads. Calyx tubular or prismatic, 5-ribT3ed 



and plaited. Corolla saJver-forra, the tube often curved, the border rather' 

 unequally 5-oleft. Stamens included: upper pair sometimes Wanting, the 

 anthers. Ovary 4-Gelled, at maturity spUtting into 4 dry akenes or nutlets. 

 Herbs. 



3. LIP PI A. Flowers in heads, spikes, or racemes. Calyx , tubular, 2 - B-tqothed. 



Corolla tubular, with 6-lobed 2-lipped border, the lower 8-lobed lip larger. 

 Stamens included. Ova-ry and dry fi-uit 2-celled, 2-seeded. 

 i. LANTANA. Flowers in heads or short spikes. Calyx minute, obscurely 

 4-toothed. Corolla with an unequal 4-cleft spreading border, the upper lobe 

 sometimes notched. Stamens included. Ovary 2-celled, becoming berry- 

 like, and containing 2 little stones or nutlets. Shrubs or herbs. 



§ 2. Fhivers nearly regular^ in cymes from the axils of the simple leaves : shrubs. 



5. CALLICARPA. Calyx 4 - 5-toothed, short. Corolla tubular-bell-shaped, short, 



4 -6-lobed. Stamens i, protnided, nearly equal. Ovary 4-celled, in fruit 

 beny-like, with 4 little ^tones. 



§ 3. Flowers irrerjular, in cymes or clusters in ike axils of the compound digitate 

 leaves 07* of the upper leaves reduced to bracts : skrubs or trees., " ' r 



6. VITEX. Calyx 5-toothed. Corolla tubular, with a spreading 2-Iipped border, 



the lower lip 3-parted and rather larger than the 2-Iobed upper lip. Stamen? 

 4, protruded, as is the stj'le. Ovary 4-celled, becoming berry-like in the 

 fniit, which contains a single 4-celled stone. 



1. PHRYMA, LOPSEED. (Name of unknown meaning. ) One species. 



P. Leptost&ohya. Copses, &c. ; 2°-3° high, with coarsely-toothed ovate 

 thin leaves^ and branches terminated by the slender spikes of very small purplish 

 flowers, in summer, the pedicels reflexed in fruit. IJ. 



2. VERBEBTA, VERVAIN. (Latin name of some sacred herbs.) J"l. all 

 summer. — Genus of difficult analysis on account of numerous hybrids, both 

 wild and in cultivation. 



§ 1. Vervains native to the country, or growing as wild tveeds, most!// in icpste 

 or cultivated ground ; thejfloirers insignificant, in s'eiider spikes ; no appen- 

 dage at tip of the anthers. AH but the last. with upright stems., y. 



V. angustifdlia, Narkow-leaved V. Stems 6' - 18' high ; leaves nar- 

 16 



