30 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 8l 



Plants have not been studied through their parasites by the von 

 Ihering method. On the chance of possibly interesting some botanists 

 it may be worth while to list a few plants of interest in connection 

 with southern dispersal. The forms listed seem to indicate : some a 

 dispersal from northerly lands southward, but many more a dispersal 

 eastward or westward between southern lands, some by way of Ant- 

 arctica. Omitting less conspicuous forms, note the following ferns 

 and flowering plants : 



Ferns 



Polytriclmin vcstituni — Australasia, South America, islands of southern 



Pacific Ocean. 

 P. richardi — Australasia, Southern Pacific islands. 

 Asplcnmm ftaccidum — Australasia, South America, Africa. 

 Blechnum pcnamarlna — Australasia, South America. 

 B. capense — Australasia, South America, Africa. 

 Hcsteoptcris incisa — cosmospolitan in the tropics. 

 Pteridium csciilcntum — Australasia, South America. 

 Polypodiuin billardicri — Australasia, Malaysia, South America, Africa. 

 HynicnophyUum ferrugineum — Australasia, South America. 

 H. tunbridgcnsc — Australasia, South America, Africa. 



Dryoptcris punctata — Australasia, South America, islands ofif South Africa. 

 Polystichuin adia)itifoniiac — Australasia, South America, southern Pacific 



islands. 

 Asplenimn adiantoidcs — Australasia, Africa, islands of southern Pacific. 

 Pocsia scabcnda — Australasia, Africa. 

 Flowering plants 



Cypresses: Callitris in Africa, Madagascar, Australasia; Fit^roya in Qiile, 



Tasmania. 

 Hierochloe rcdolctis (grass), Australasia, South America, southern Pacific 



islands. 

 Monimiaceae : Tasmania, New Caledonia, New Zealand, Madagascar. 

 Saxifragaceae- — 35 genera in Australasia, Madagascar, South Africa and 



South America, only 2 of which cross the equator. 

 Proteaceae : 48 genera, 950 species in South America ; 32 genera, 250 species 



in South Africa. 

 Verbenas : Petraea in South America, Timor, Java ; Pctracovitc.v, (a close 



relative) in Bouru and Amboina. 



Species common to Australasia and South America : 



Sedges as follows: Scirpus inundatus (extending to islands of the south 

 Pacific), Carex danvinii, and its subspecies tirolepsis, C. trifida; Lunula 

 racemosa; Lusiiriaga parziiHora (Liliaceae) ; Colohanthus qiiitensis; Crassula 

 moschata; Gcum parviflonim; Sophora tctraptcra (the kowhai tree) ; O.valis 

 magcllanica; Geranium scssiflorum ; Pelargonium australe, (New Zealand, 

 Australia, Tristan da Cunha) ; Coriaria ruscifolia, C. thymifolia; Epilobium 

 conjugens; Veronica elliptica. 



