420 FLORA OF TEXAS. 



laterally cohering at the base. — An annual pubescent and 

 somewhat viscid branching lierb, with lanceolate entire or 

 sparingly toothed acute leaves, and small pale hlxxQ Jloivers, 

 on 1-3-flowered axillary peduncles. 



I. CCERULEUS, Michx. Dry soil. July-August. Stem 

 terete, 1°-1 J° high ; leaves I'-IJ' long, 3-nerved below the 

 middle. 



TRICHOSTEMA, L. Blue-curls. 



Calyx short, reversed, oblique, 5-toothed, the 3 lower 

 teeth long, connate, the 2 upper ones very short; corolla 

 slender, nearly equally 5-cleft; stamens 4, long-exserted, 

 partly coiled; anther-cells diverging; nutlets pitted, united 

 at the base. — Branching annuals, with entire leaves, and 

 solitary \A\xe flowers on lateral peduncles. 



T. DTCHOTOMUM, L. Pubesccnt and somewhat viscid, or 

 nearly smooth; stem much branched, obscurely 4-angled; 

 leaves oblong or lanceolate, obtuse, narrowed into a petiole. 

 (T. lineare, Nutt., is a smoother form, with linear leaves.) 

 Dry sandy soil. August and September. Stem l°-2° high. 



88. BORAGE FAMILY. Order, Borraginace^. 



Herbs or shruhs, with terete or irregularly angled stems, 

 and alternate entire exstipulate mostly rough-hairy leaves ; 

 flotoers usually in 1-sided spikes or racemes, which are 

 coiled in the bud ; calyx free, 5-cleft or 5-parted, valvate in 

 the bud, persistent; corolla regular, hypogynous, 5-lobed, 

 imbricated or (in Myosotis) convolute in the bud; stamens 

 5, equal, inserted on the tube of the corolla and alternate 

 with its lobes ; ovary 4-celled, with a single ovule in each 

 cell; style single; fruit various; albumen scarce or none; 

 cotyledons flat or folded; radicle superior. 



SYNOPSIS. 

 Tribe I. Borrageae. Ovary deeply 4-parted, inclos- 



