342 



Scrophularin&B Collinsia. 



from North America, and chiefly Californian. The genus was 

 dedicated to Zaccheus Collins, an American botanist of note. 



1. G. blcolor (fig. 188). This is the commonest species and 

 one of the best for general purposes. It grows from 1 to 2 



feet high with strongly- 

 nerved lanceolate leaves, 

 opposite or in threes. 

 The flowers have the 

 upper lip pale lilac 'or 

 white, and the lower a 

 deep lilac purple. There 

 is also a variety with 

 quite white flowers. 



C. grandiflora is a 

 similar plant having 

 rather larger flowers with 

 a purplish lilac upper lip 

 and a deep blue lower lip. 

 0. multicolor has a broad 

 white blotch spotted with 

 crimson on the upper 

 lip; C. heterophylla has 

 the lower leaves trilo- 

 bate, but otherwise very 

 near C. blcolor, of which 

 it may be a mere variety. C. verna is a distinct species in 

 having the blue and white flowers on long stalks. 



13. CHELONE. 



This genus comprises a few species separated from Pentste- 

 r mon on account of the seeds being winged, the barren stamen 

 shorter than the others, and the inflorescence a close bracteated 

 spike. The species are all North and Central American. 

 XeXa>j>?7 is equivalent to tortoise, and is applied to this genus 

 from the resemblance of the inflated corolla to that animal. 

 Ch. barbata, Ch. gentianoides, Ch. centranthifolia, Ch. cam- 

 panulata, and Ch. speciosa are true Pentstemons. 



1. Ch. glabra, syn. Ch. pui^purea and Ch. obliqua. An erect 

 glabrous perennial about 2 feet high. Leaves nearly sessile, 

 lanceolate, acuminate, serrate. Flowers white, rose or purple, 

 nearly sessile ; bracts foliaceous, imbricated. This has several 



Fig. 188. Collinsia bicolor. (J nat. size.) 



