ARKIV FÖR BOTAjS^IK. 



BAND 17. N:o 12. 



'axoiioiiiical and cytological studies on culti- 

 vated Ecuadorian species of Carica. 



By 

 O. HEILBORN. 



With 1 Plate and 17 Figures in the text. 

 oramunicated September 14th 1921 by G. Lagerheim and O. Rosenberg. 



During a journey in Ecuador 1919 — 1920 I collected ma- 

 jrial for a cytological study of some parthenocarpic fruits, 

 [y attention was especially attracted by two parthenocarpic 

 aecies of Carica that are cultivated in the valleys of the 

 Ecuadorian Andes. When, after returning home, I tried to 

 lentify these species, I was rather surprised to find that 

 ley have not yet been described in scientific literature. A 

 escription of them is thus necessary before entering upon 

 16 cytological part of this work. Besides these two species 

 have also made a study on C. candamarcensis Hook, and 

 '. Papaya L., both of which are common fruit-trees in 

 Icuador. 



Taxonomy. 



Carica chrysopetala nov. sp. 



Textfigs. ], 4 and PI. I, Fig. 1. 



Dioica. Arbor, perglaber; foliis palmatis quinquifidis, 

 ledio lobo trifido, ceteris lobis aut bifidis, aut trifidis. Flo- 

 ss masculi ignoti; flores feminei solitarii, e superiore parte 



Ath-iv för botanilc. Band 17. N.o 12. 1 



