TREES AND SHRUBS 141 



late toward the ends of the stems; calyx lobes 5-linear 'filiform, 

 united but little at the base; corolla tube narrow, shorter than the 4- 

 parted spreading limb, less than 1 cm. long, pale blue, (in our 

 species), capsule ovate, short acuminate, or compressed, short stip- 

 itate; seeds very flat. 



1. - C. linearifolia. 



2. ANISACANTHUS Ness. 



Woody shrub 3 feet high or often more, with lanceolate, en- 

 tire, short-petioled, acute or obtuse leaves, 1 to 1% inches long, 

 often appearing fascicled and clustered ; conspicuous reddish flowers 

 on short pedicels; calyx lobes 5, equally long attenuate, as long as 

 the capsule; glandular pubescent, persistent; corolla reddish or 

 pinkish white, narrowly funnelform about 1 inch long; 4 lobes sim- 

 ilar, lanceolate, entire, the fifth rather more deeply separated; sta- 

 mens and style equalling or exceeding the corolla lobes; capsule 



ovate, long stipitate; seeds mostly 2. 



1. A. thurheri. 



RUBIACEAE. Madder Family. 



This family which contains such well known genera as 

 Houstonia ("bluets") and Galium ("bedstraws" or "cleavers") 

 is represented by only a single shrubby species of Bouvardia, 

 a species well worth cultivation for its conspicuous red flowers. 

 Several species of this genus are already in cultivation. 



I. BOUVARDIA Salisb. 



Low shrub, the upper parte of the stems herbaceous, with 

 ovate-lanceolate, short petio!ed, leaves, 1 to 2 inches long, mostly in 

 whorls of 4, and terminal cymes of conspicuous red heterogone and 

 dimorphous flowers with slender tubular corollas; hypanthium tur- 

 binate or campanulate; sepals 4, persistent; corolla lobes short, val- 

 vate in the bud; style slender, more or less exserted in some of the 

 flowers: stigmas 2, obtuse; ovary 2-celled; capsule didymous to 

 globose, coriaceous loculicidal; seeds numprous, flat, winged all 

 around, imbricated on the placenta. 



1 b. mfata. 



