Ferns of British India and Ceylon. 65 



*Only 1 pair of veins anastomose, rarely 2 in polycarpum. 



12. polycarpum. Auricled. Indusium didymoch 



lcenoid. 



13. tectum. No auricles, frond deltoid or some of 



the lower pinnae reduced and deflexed. 



14. brachyodon. No auricles. Venation often 



lastreoid, 1 free vein arises from rachis between 

 the groups. 



15. heterocarpon. Auricles or glands. Pinnae 4-6 



inches long ; coriaceo-herbaceous. 



16. perakense. Auricled. Pinnae 1-2^ inches 



long, softly herbaceous, densely hairy. 

 **2 or more pair of veins anastomose, occasionally only 

 1 in molle. 



17. glaucostipes. Stipe glaucous, regular auricles 



below pinnae, 2 pair of veins anastomose. 



18. molle. Herbaceous, more or less pilose, no regular 



auricles, 1-2 pair of veins anastomose. 



19. molle var. major. Larger than type, very 



prominent auricles below the pinnae. 



20. amboinense. Papyraceous, generally much 



auricled, pinnae narrow entire or nearly so, 

 2-3 pair of veins anastomose. 



21. evolutum. No regular auricles. Papyraceous, 



pinnae distant and very broad, 3-6 pair of 

 veins anastomose. 



22. Arbuscula. River bed fern, prominent auricles 



below, 3-4 pair of veins anastomose. 



23. truncatum. Lobes generally square at apex ; 



2-4 pair of veins anastomose; auricles abortive. 

 6 



