POLEMONIACE.E 239 



opposite and imparipinnate with three pairs and an odd leaflet, 

 all of which are oblong-lanceolate and penninerved. The 

 second pair of leaves are opposite or slightly alternate, pari- 

 pinnate and ending in a compound alternately branching 

 tendril. They have each three pairs of leaflets. The fifth and 

 sixth leaves are similar but alternate. 



The seedling of Navarettia involucrata closely resembles 

 that of Polemonium casruleum, but the cotyledons are more 

 oval, the first two leaves are quinquefoliolate, and the hypo- 

 cotyl is more elongated. 



The cotyledons of Gilia crassifolia (fig. 527) are spathulate 

 with rather long petioles, dilated and connate at the base. 

 The primary internodes being undeveloped a large number of 

 the leaves are radical, and exhibit a considerable amount of 

 evolution. The first pair are pinnatisect with five segments ; 

 the second pair have eleven to thirteen segments, and from 

 the third pair onwards many of the primary ones are again 

 divided at the base, making the leaves bipinnatisect. In Gilia 

 lutea (fig. 528) belonging to the subsection Leptosiphon, the 

 cotyledons are also spathulate but very small. The leaves 

 also show a very distinct character in being palmately divided 

 into linear segments, and being opposite they present a 

 verticillate appearance. The first and second pairs are tri- 

 partite ; the third pair have five segments, and the ultimate 

 leaves are cut into seven to eleven linear diverging rays. 



In Gilia squarrosa we have a seedling resembling that of 

 G. crassifolia in habit, with a somewhat similar evolution of 

 the leaves. The cotyledons are short and linear, and the first 

 pair of leaves are like them but longer. The second pair 

 have five segments ; the third pair have five to seven segments ; 

 and the fourth pair are somewhat bipinnatisect with linear 

 segments. 



Collomia coccinea, Lehm. 



Ovary of three carpels, surrounded at the base with a small 

 annular disk, three-celled, with one ovule in each cell ; ovule basal 

 from the inner angle of the cell, erect, anatropous ; micropyle in- 

 ferior. 



Fruit an obovoid-trigonous or trilobed capsule, glabrous, pale 

 green, ultimately pale, colourless or dirty white, thin, brittle when 



