PLATE 21. 



Holascella taraxacum Lendenfeld. 

 Figures 1-13. 



I, 2. — A main-ray with its end-rays of an oxyhe.xaster; magnified 2000; u. v. phot. Zeiss, q. monochr. 



1.7, q. oc. 10: 

 1, focussed higher; 2, focussed lower. 

 3, 4. — The distal part of an end-ray of a discohexaster; magnified 2000; u. v. phot. Zeiss, q. monochr. 

 1.7, q. oc. 10: 

 3, focussed higher; 4, focussed lower. 

 5-7. — The distal part of end-rays of three different discohexasters ; magnified 2000; u. v. phot. Zeiss, q. 

 monoclir. 1.7, q. oc. 10. 



8. — View of the most complete specimen; reduced 1: 0.7; phot. Zeiss, anastig. 480/412 mm. 



9. — Part of an end-ray of an oxyhexaster; magnified 2000; u. v. phot. Zeiss q. monochr. 1.7, q. oc. 10. 

 10. — Centrum and main-rays of a discohexaster; magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7, 



q. oc. 10. 



II, 12. — Large and small discohexasters; magnified 200; phot. Zeiss, apochr. 8, compens. oc. 6. 

 13. — Small discohexasters; magnified 300; u. v. phot. Zeiss, q. monochr. 6, q. oc. 5. 



