404 FLORA OF TEXAS. 



fruit dry or baccate, 1-8-celled, commonly separable into 

 as many 1-seeded indeliiscent nutlets ; albumen scarce or 

 none ; embryo straight. 



SYNOPSIS. 



Tribe I. Verbeneae. Ovule solitary, erect from the 

 base of the cell, anatropous. Radicle pointing downward. 

 Flowers in spikes or heads. 



* Herhs; fruit dry. 



Stamens 4. Ftndt of 2-ceUed nutlets, inclosed in the inflated calyx Vkbbena. 



4. ^-celled nutlets. Flowers capitate Lippia. 



** Shrubs; fruit f^shy or pulpy. 



Fniit of 2-celled nutlets. Flowers capitate Lantaita. 



Tribe II. Viteae. Ovule solitary, suspended from the 

 inner angle of the cell, amphitropous. Radicle pointing 

 downward. Floioers in cymes. Fruit baccate. 



Fruit of 4 separate 1-celled nutlets. Shrubs Caxlicabpa. 



Tribe III. Phrymese. Ovule solitary, erect from 

 the base of the 1-celled ovary, orthotropous. Radicle -point- 

 ing upward. Cotyledons convolute around their axis. 

 Floivers in elongated slender spikes. Fruit a caryopsis. 



Corolla bilabiate. Stamens 4, didynamous. Fruit reflexed Phryma. 



VERBENA, L. Vervaii^. 



Herbs, with smOiW flmvers in lengthened slender spikes; 

 leaves serrate orpinnately divided; calyx tubular, 5-ribbed, 

 5-toothed; corolla salver-shaped, bearded in the throat, the 

 limb somewhat bilabiate, 5-lobed ; stamens 4, didynamous, 

 included ; stigma 2-lobed ; ovary 4-celled ; fruit of 4 sepa- 

 rate 1-seeded nutlets. 



* Anthers of the longer stamens tipped roith a gland-like appendage ; flowers showy. 



V. AuBLETiA, L. Hairy; stem creeping at the base, 

 ascending, forking; leaves ovate-oblong, 3-cl eft, with the 



