180 



Davis. 



Bracts projecting beyond the younger 

 buds as in muricata. Thus with respect 

 to the relative length of the bracts, a 

 striking feature of the inflorescence (Fig. 

 14), these hybrids are strongly matro- 

 clinous. 

 Mature buds. About 4"5 cm. long. Cone 

 variable in size. 



Younger buds projecting beyond the 

 bracts as in biennis. Thus with respect 

 to the relative length of the bracts, a 

 striking feature of the inflorescence (Fig. 

 15), these hybrids are strongly matro- 

 clinous. 

 Mature buds. About 45 cm. long. Cone 

 variable in size. 



Fig. 10. Rosette of hybrid, muricata ^n biennis, nearly mature, a close cluster of broadly- 

 elliptical, crinkled leaves. Patroclinous in general morpliology, but showing strong 

 evidence of the influence of the muricata parent in the varied forms of the leaves rela- 

 tively not so broad as those of biennis. Compare with Fig. .3, biennis, and contrast with 

 Fig. 11, biennis X muricata. 



Sepal tips shorter and thicker as in 

 muricata (Fig. 16. m yi b), and there- 

 fore matroclinous. Pubescence of sepals 

 and ovaries an evident blend. 

 Petals. (r8 — r4 cm. long, smaller than an 

 average between the parents. 



Large and small flowers may be on 

 the same plant, and in varying shades of 

 yellow. 



Sepal tips long and slender as in 

 biennis (Fig. Ifi, 6 >C m), and therefore 

 matroclinous. Pubescence of sepals and 

 ovaries an evident blend. 

 Petals. 0'8 — 1'4 cm. long, smaller than an 

 average between the parents. 



Large and small flowers may be on 

 the same plant, and in varying shades 

 of yellow. 



