VERBENACEAE. 169 



1. H. parviflorum L. Plants 2-12 dm. tall: leaf -blades elliptic to oblong- 

 lanceolato, 2-7 ciii. long, veiny: calyx-lobes lanceolate to linear, 1-1.5 mm. long: 

 corolla white; tu])e 1-1.5 mm. long: fruits about 2 mm. wide. — Hammocks, — 

 F. K. {Bah., Cuba, Ant.) 



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

 elliptic, 1-2 cm. long: calyx-lobes lanceolate, 3-4 mm. long: corolla pale- 

 yellow. — Everglades. — F. K. 



3. H. horizontale Small. Plants with radially prostrate branches, 1-5 cm. 

 long, often matted: leaf -blades linear or nearly so, 0.8-1.6 cm. long: calyx- 

 lobes lani-colato, 4-5 mm. long: corolla golden-yellow. — Pinelands. 



Family S. VERBENACEAE. Vervain FAiiiLV. 



Herbs, shrubs, or trees. Slenis 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^-carpellary, the style 

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



Inflorescence centripetal : ovules erect. 



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. 



Herbs with procumbent or creeping stems. 2. Phyla. 

 Shrubs or shrubby plants with upright 



stems. 3. Goniostachyum. 



Stamens 2 : fruit imbedded in excavations of the 



thick rachis. 4. Valerianoides. 



Fruit drupaceous. 5. Lantana. 



Flowers in open racemes. 0. Citiiakexylum. 



Intlorosc-ence centrifugal, cymose : ovules laterally attached. 



Corolla regular : stamens equal. 7. Callicarpa. 



Corolla irregular : stamens paired. 8. Clerodendrox. 



1. VERBENA [Tourn.] L. Kerbs. 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. — Hammocks, pinelands and coastal sand- 

 dunes. — Verbena. 



2. PHYLA Lour. Herbs. Leaf-blades toothed or lobed. Flowers in 

 congested axillary spikes, the bracts cuneate to flabellate. Calyx flattened, 

 2-lobed. Corolla 2-lipped: tube scarcely exceeding the calyx. Frog-fruit. 



Leaf-blndes not rugose, shallowly toothed above the middle : corolla less than 2.5 



mm. long. 1. /'. nodipora. 



Leaf-blades rugose, saliently toothed throughout : corolla over 



2.5 mm. long. 2. P. stoechadifolia, 



1. P. nodiflora (L.) Greene. Plants soft-strigillose with creeping branches 2-13 

 dm. long: leaf-blades spatulate, 1-3 cm. long: spikes 10-30 mm. long: calyx 

 about 2 mm. long: corolla about 2 mm. long: fruits about 1 mm. long. — 

 Everglades. — F, K. {Ber., Bah., Cuba, Ant.) 



