PLANTS FOUND ON THUMA THAYA. 



4.3 



Hypericum, a fine Arundo, Bucklandia : Cotoneaster microphylla, a 

 Sabia, Coriaria, Abelia ? a rare Dipodous Orchidea of the same genus 

 as a dwarf plant of the Cossiya Hills. Rhododendron, scandesent 

 Eleodendron. 



The ascent for the greater part is a steep wooded ridge ; the first 

 change indicated or induced by elevation is the diminution of the 

 size in the trees, and the frequent occurrence of a Betulus ? out of 

 flower. Proceeding onward one comes to a ridge, the S. E. declivity 

 of which is nearly naked, the opposite being wooded with shrubs, 

 Viburnum, Conaria, Mespilus, Pomacea, Rhododendron, Rubiacea 

 Serissa, Cupulifera and some Composite occur. Then Arbutus Vac- 

 cinium ; Nardus : Filix cano-tomentosa, Lycopodium ; Dicranum atra- 

 tum ; one or two Hypna, a Bryum, and Neckera fusca. Descending 

 slightly from thence the ridge is observed to be wooded on both sides ; 

 it is at the termination of this that we halted. The ascent is conti- 

 nued up a rock, and the whole of the mountain is, excepting the 

 ravines, covered with Graminea, Cyperacea, Filix cano-tomentosa, etc. 

 but the Ericoidea are not so fine. The grasses of the summit are two 

 Andropogons : an Arundo Festucoidea, Panicum, Isachne, Nardus 

 ceasing below, it is towards this that Crepis ? and Campanula are 

 common. 



The Geratostemmata are found towards the summit, none descend 

 any distance, except one of Roxburgh's ; they are all generally 

 epiphytes. Orchidea become more common towards the halting 

 place ; beyond this I observed only two past flowering, one Habe- 

 naria, and a Malaxidea ; the others are two Cselogyne, a Dipodious 

 Orchidea, labelli ungue sigmoideo very common, a Bolbophyllum, 

 and a few ditto epiphytes out of flower, one terrestrial Bletioidea 

 is common in some places. At our halting place, I observed an 

 arborescent Araliacea, a Cissus, an Acanthacea and a Laurinea. A 

 little below, Pandanus occurs here and there, and attains a large size, 

 the largest in fact I have ever seen. Castanea occurs about half way 

 up, it is that species with rigid compound spines to the cupula. I 

 gathered also a fine Geastrum, but the specimens are lost. Buck- 

 landia occurs extensively ; it is a distinct species owing to its many 

 flowered capitula ; Sedgwickia comes into play towards Yen, where 

 Bucklandia appears to become scarce : a large Vitex floribus roseo- 

 purpureis is the most conspicuous tree of all, it ceases towards 

 the summit ; Cyathea I observed only above half way. Camellia axil- 

 laris occurs below, but I missed the Laim planj plant. I may here 



