40 The Philippine Journal of Science 1923 



The following seventy genera are essentially confined to the Benguet- 

 ontoc region so far as their occurrence in the Philippines i 



Taxus (also on Mount Bana- Lespedeza. 



hao) 1 \ Shuteria. 



Pinus (also in Zambales and one Boenninghausenia. 



species in Mindoro). Skimmia. 



Agrostis. Swrcococca. 



Aniselytron. Pistacia. 



Arundinaria. Vitis. 



Brachypodium. Daphne. 



Bromus. Carionia. 



Calamagrostis. Epilobium. 



Chionachne. Acanthopanax. 



Deschampsia. Loheria. 



Microlaena. Swertia. 



Monostachya. Petalonema. 



Poa. Bothriospermum. 



Aletris. Plectranthus. 



Alectra. 



Bythophytum. 



Ellisiophyllum. 



Hemiphragma. 



Veronica. 



Galium. 



Peracarpa. 



Thalictrum. 



Berberis. Aster. 



Mahonia. Senecio. 



Anaphalis. 



Asttlbe. Carpesium. 



Deutzia. Cirsium (also on Mount Bana- 



Fragaria. hao). 



Rosa - Merrittia. 



Dumasia. Solidago. 

 It will be noted that practically all of these genera are those that are 



characteristic of the North Temperate Zone and poorly represented in 



tropical regions. Six genera, Aniselytron, Monostachya, Carionia, Loheria, 



10 Mount Banahao is an extinct volcano of Recent and Pleistocene ages, 

 having an altitude of 2,188 meters, situated on the border of Laguna and 

 Tayabas Provinces, about 350 kilometers south of Baguio. Three northern 

 types occur at or near the summit of this mountain, but not elsewhere 

 south of Benguet. They are Taxus wallichiana Zucc, Cirsium philippinense 

 Merr., and Ainsliaea reflexa Merr., the first bird-distributed, the last 

 two wind-distributed species. 



