11 



Name 



Stature, Feet 



Color of Flowers 



Fragrance 



V. Chamissoniana 



■ 3-5 



1-2 



1-4 

 2-3 

 1-3 



1-2 



4-6 



3-5 

 3-5 

 3-6 

 2-3 

 6-8 



2-3? 



Pink, rose, purple 



White, pale lavender 



Pinkish-white 



Pure waxy white 



Pale blue 



Dark blue 



White to dark blue 



White 



Pale purple 



Pinkish 



White 



Greenish-white 



Purplish-white 





Helena 





var. Lanaiensis 



helioscopa 



Kauiensis 



Yes 







var. Kohalana 



Oahuensis 



Yes 



robusta 



var. Mauiensis 





var. Wailenalenae 



I. pvrifolium 



Yes 



longifoliiim 









College of H.^w.^ii, 

 Honolulu 





• 





A NEW HYBRID SUNFLOWER 



By T. D. a. Cockerell 



In 1895 Rydberg described a supposed species Helianthus 

 aridus, which occurred in the region of H. petiolaris and H. 

 annuus lenticular is, and appeared to be a possible hybrid between 

 the tv\-o. Another form, known as H. petiolaris var. patens 

 (Lehm.) Rydb., was also suspected of being a hybrid.* It was 

 therefore particularly desirable to produce a genuine petiolaris X 

 annuus hybrid, for comparison with these more or less inter- 

 mediate forms. My wife made the crosses last year, and this 

 year we have the resulting plants in large numbers. The petio- 

 laris, used as the seed plant, was a specially fine but typical plant 

 raised from seed collected by Mr. D. M. Andrews in Oklahoma. 

 The annuus were various, including chestnut-red (coronatus) 

 forms. The H. petiolaris was perfectly fertile with the annuus 

 pollen, and the hybrids are all alike in general appearance. 



Helianthus annuus X petiolaris, n. hybr. 



Plants about four feet high, freely branching, the growth 

 essentially like petiolaris; stems and branches hairy, more or less 

 speckled with purple; leaves alternate, rarely opposite, the peti- 

 oles about equal to the blades, or often shorter; leaf-blades with 



♦American Naturalist, XLIX (1915), pp. 611-613. 



