IX EXTRA-TROPICAL COUNTRIES. 259 



Plectocomia macrostachya, Kurz. 



Tenasserim, at 3,000 feet elevation, therefore most likely hardy in 

 temperate lowlands. 



Plectronia ventosa, Linne. 



South Africa. A hedge-bush, like P. ciliata (Sender), and P. 

 spinosa (Klotzsch). 



Poa Abyssinica, Jacquin. ,, 



The Teff of Abyssinia. An annual grass. The grain there exten 

 sively used for bread of an agreeable acidulous taste. 



Poa airoides, Koeler. (Catabrosa aquatica, Beauvois.) 



Europe, North Africa, North and Middle Asia, North America. 

 The "Water- whorl Grass. A creeping grass, suitable for soil subject 

 to inundation. 



Poa Alpina, Linne. 



Alpine and Arctic Europe, Asia, and North America. Deserves 

 to be transferred to snowy mountains as a nutritious perennial 

 pasture grass. P. Sudetica (Haenke) and P. hybrida (Guadin) are 

 mentioned also as excellent Alpine grasses. 



Poa angustifolia, Linne. 



Europe, North Asia, North America. A perennial pasture grass, 

 allied to P. nemoralis. An excellent grass for moist meadows and 

 river banks. Poa fertilis (Host.) may be a mere variety of this 

 species. 



Poa aquatica, Linne. (Glyceria aquatica, Smith.) 



Europe, North and Middle Asia, North America. This conspicuous 

 Water-grass attains a height of 6 feet. It is perennial, and deserves 

 naturalization in our swamps. It produces a large bulk of foliage, 

 and may be disseminated for fodder purposes. On the testimony 

 of Dr. Curl this is one of the best feeding grasses in New Zealand. 



Poa Billardieri, Steudel. 



Australia. A perennial rigid grass, of some value for saline 

 meadows. 



Poa Brownii, Kunth. (Eragrostis Brownii, Nees.) 



Tropical and Eastern extra-tropical Australia. It is here mentioned 

 as a valuable perennial species, keeping beautifully green in the 

 driest Australian summer, even on poor soil. The section Eragrostis 

 of the genus Poa contains numerous species in the hotter parts of 

 the globe. Of these many would doubtless be hardy and prove cf 

 value as pasture in temperate climes. 



