128 VERBENACEAE. 



Anthers without terminal appendages : larger calyx-lobes linear, lanceolate or 



oblong-lanceolate. 

 Diffusely decumbent succulent plant : the four nutlets 



early separating. 1. H. curassavicum. 



Erect much branched plant, not succulent : the nutlets 



rather persistently united by pairs. 2. H. parviflorum. 



Anthers with terminal appendages : larger calyx-lobes 



ovate-lanceolate. . 3. H. phyllostachyum. 



Corolla yellow, over 7 mm. long : perennial. 4. H. Leavenworthii. 



1. H. curassavicum L. Plants perennial, or mainly so, 1-4 dm. tall: leaf- 

 blades spatulate, varying to obovate or linear, mainly 2-6 cm. long: calyx- 

 lobes lanceolate to oblong-lanceolate, 1.5-2 mm. long: corolla white, except the 

 yellow eye, turning blue; tube about 2 mm. long: fruits 2-2.5 mm. long. 

 Hammocks, shores and waste places, U. keys, L. keys, L. S. keys. (Bah., 

 Cuba, Ant.) 



2. H. parviflorum L. Plants annual, 2-12 dm. tall: leaf -blades elliptic to 

 oblong-lanceolate, 2-7 cm. long, veiny: calyx-lobes lanceolate to linear, 1-1.5 

 mm. long: corolla white; tube 1-1.5 mm. long: fruits about 2 mm. wide. 

 Hammocks and pinelands, U. S. keys, U. keys, L. keys. [E. K.] (Bah., 

 Cuba, Ant.} 



3. H. phyllostachyum Torr. Plants annual, 0.5-2 dm. tall: leaf -blades oblong 

 to elliptic, 1-2.5 cm. long: calyx-lobes lanceolate, or the larger one ovate- 

 lanceolate, 2-3 mm. long: corolla white; tube 2-3 mm. long; lobes about 1 mm. 

 long : fruits about 1.5 mm. wide. Hammocks and waste places, Key West. 



4. H. Leavenworthii Torr. Plants 2-11 dm. tall: leaf -blades linear to linear- 

 elliptic, 1-2 cm. long: calyx-lobes lanceolate, 34 mm. long: corolla pale- 

 yellow; limb 7-8 mm. wide, angular. Hammocks, U. keys. [E. K.] 



FAMILY 7. VERBENACEAE. VERVAIN FAMILY. 



Herbs, shrubs, or trees. Stems commonly angled. Leaves alternate, 

 opposite, or whorled : blades simple or rarely compound. Calyx of 4 or 5 

 partially or wholly united sepals. Corolla of 4 or 5 partially united petals, 

 sometimes 2-lipped. Androecium of 2 or 4 stamens, the filaments more 

 or less adnate to the corolla-tube. Gynoecium 2-4-carpellary, the style 

 terminal. Fruit baccate or drupaceous, or an aggregate of 2 or 4 nutlets. 



Flowers in heads, spikes or spike-like racemes. 

 Fruit of 2 or 4 nutlets, dry. 



Stamens 4 : fruit not imbedded in the rachis. 



Fruit of 4 nutlets. 1. VERBENA. 



Fruit of 2 nutlets. 



Calyx not inflated at maturity. 2. PHYLA. 



Calyx inflated at maturity and enclosing the fruit. 3. PBIVA. 

 Stamens 2 : fruit imbedded in excavations of the thick 



rachis. 4. VALEBIANOIDES. 



Fruit drupaceous. 5. LAXTANA. 



Flowers in open racemes. 



Drupes seated in the calyx : nutlets 2 : stigma 2-lobed. 6. CITHAREXYLUM. 



Drupes enclosed in the calyx : nutlets 4 : stigma 4-lobed. 7. DCBAXTA. 



1. VERBENA [Tourn.] L. Herbs. Leaf-blades coarsely toothed or 

 dissected. Flowers in depressed capitate spikes, which elongate somewhat in 

 age, the bracts narrow. Calyx tubular, 5-lobed. Corolla white or colored, 

 salverform. Anthers of the larger stamens with an appendaged connective. 



1. V. maritima Small. Perennial, the diffuse or widely creeping branches 2-20 

 dm. long: leaf -blades cuneate to orbicular-obovate, 1-4 cm. long, incised, few- 

 toothed or lobed: calyx 9-11 mm. long, the larger lobes subulate-lanceolate: 

 corolla purplish: nutlets 4 mm. long. Coastal sand-dunes, U. S. keys. [E. K.] 

 VERBENA. 



