THE FEEN-ALLIES OF THE MALAY PENINSULA. 161 



Bare. 



Pahang. Woods by the Teku, Gunong Tahan (Ridley 

 15951). 



Dubiae. 



S. longiaristata, Hieronymus in Hedwigia, Vol. L. 16, gives 8. 

 longiaristata, Hieron, as collected by me " on Bukit Punah in 

 1903/' (evidently Bukit Timah) with no number. 8. longi- 

 aristata from Borneo specimens so named by him in Herb, 

 Kew, closely resembles 8. plumea except that its lower plane 

 leaves are smaller, I have seen nothing exactly like it from 

 the Malay Peninsula. 



S. t en ui folia, Spring, Mon. ii. 253 is given from Malacca by 

 Rosenberg, with no collector's name. It is an Indian plant. 



S. decipiens, Warb. Monsunia I. 127. " Malacca " Rosenburg was 

 based on a plant collected by Heifer in the East Indies. 

 Heifer was never in the Malay Peninsula. 



S. plumosa, Bak., Fern-Allies, p. 50. Was presumably based on 

 Lycopodium plumosum, Linn., to which he added a number of 

 species from India and Malaya, including such distinct species 

 as radiata, Spring, monosyora, Spring, biformis, A. Br., etc. 

 with none of these has Linnaeus' plant any affinity. It is a 

 West Indian species of a dwarf creeping habit not bearing any 

 great resemblance to any of our species. The type is a mere 

 fruitless scrap but should be identifiable. 



III. RHIZOCARPEAE. 



Azolla, Lam. 



Minute floating plants with much branched stems and sessile 

 minute imbricate deeply lobed leaves; roots fine from underside 

 of stem. Sporocarps in groups of 2 and 4 at the base of a stem 

 branch. 



A. pinnata, R. Br. Mind. Voy. ii. 611. t. 10. Bak., Fern-Allies, 

 p. 138. 



Root fibres fascicled and feathered. Fronds .5 (to 1 in.) 

 long, oblong or deltoid with numerous compound branches, 

 leaflobes firm, red. 



Singapore, Galang, etc. Common in the water holes in 

 Chinese Gardens where they grow Pistia, etc. for their pigs. 

 No doubt introduced. 



Distrib. Type form in Australia with fronds up to 1 in. 

 long; the var. Africana, Desv., here with small fewer more 

 compound branches. 



Distrib. Tropical Africa, Asia, Japan. 



R. A. Soc, No. 80, 1919. 



