266 



Arthraxon ciliaris Beauv., Bubsp. nudus Hack. 1. c. 356. 



Luzon, Province of Benguet, Kabayan (4427 Merrill) October 27, 1005. British 

 India. 



Arthraxon ciliaris Beauv. subsp, Quartinianus Hack. I. c. 366. 



Luzon, Province of Benguet, Bued River, Bugiaa and Pauai to Baguio (4272, 

 4677, 4704 Merrill) October, November, 1905. British India and tropical Africa. 



ISCHAEMUM Linn. 



Ischaemum arundinaceum F. Muell. var. radicans Hack. var. nov. 



Differt a typo (australiensi) culmo in parte inferiorc decumbente e 

 nodis radicante graciliore, foliis, racemis, spiculis minoribus. rhacheos 

 articulis breviter ciliatis, gluma I distinetius rcticulato-nervosa. 



LUZON, Province of Benguet, Baguio (4264 Merrill) October 22, 1905. Abundant 

 on banks and slopes, in tbe pine region at about 1,500 in. 



Tlie type of tliis species is a tall, erect grass 1 meter high, somewhat larger 



in all its parts than the variety bere described, but the structure of tbe 

 spikelets in both is essentially the same. Jn the type the nerves of glume 1 

 anastomose only in the upper part. 



Ischaemum Merrillii Hack. sp. nov. 



Ferenne. Cnhni erecti, graciles, circ. I dm. alti, teretrasculi, glabcr- 

 rimi, multinodes, nodis pluribus in culmi basi confertis add it is 3 supe- 

 rioribus phis minus remotis, snmmo supra medium culmi sito, simplices 

 vel ramulo foliifero aueti. Vaginae superiores internodiis breviores, 

 inferiores iis longiores, subeomprossae, snperiores subcarinatae, secus mar- 

 ginem exteriorem et props os pilis adspersae, ceteram glaberrimae. Ligula 

 membranacea ovato-oblonga obtusa in vagi nam decurrens, 2.5-4 mm. 

 longa, nervosa, eiliis parcis longis pilisque dorsalibus vestita. Laminae 

 lineari-lanceolatae basi subito in petiolnm subdistinetum (in foliis in- 

 ferioribus 1.5 cm., in superioribus 0.5 cm. longum) angustatae, tenuissime 

 acuminata^. 5- 8 cm. (gumma 1-2 cm.) longae, 6-8 mm. latae, patentes v. 

 patentiasimae, rigidulae, virides, utrihque (praesertim subtus) pilis ten- 

 uibus basi tuberculatis parce conspersae, marginibtis scabrae, tenuinerves. 

 Bacemi in apice culmi bini sibi appressi, alter sessilis alter pedunculo 

 cire. 5 mm. longo fultus, circ. 5 cm. longi, 4 mm. lati, densiflori ; rbacheos 

 articuli Bpiculam dimidiam paullo superantes, crassi, trigoni, utroquc mar- 

 gine pilis brevibus (articulo ;>-4-plo brevioribns) suberectis rigidulis albidis 

 ciliati. margine interiore Cere rectilinei. Spiculae scssilcs obovato-oblongae, 

 cum callo 1.5 mm. longo obtuso breviter parceque barbato 7 mm. longae, 

 2 mm. latae, livide violasccntes. Gluma I obtuse bidentula, marginibus 

 anguste inflexis, flexuris non alatis. cliartacca, in $ inl'criore subcoriacea, 

 praetor nervos flexurales (5-nervis, nervis fere ad apicem productis non 

 amistomosantibus. dorso piano saltern suporne seaberula; II I am aequana, 

 ovata, acute carinaia, apice obtusiusculo latere compressa, subchartaeea, 

 . 5-nervis, superno scabra; III quam I paullo brevior, ovato-lanceolata 

 acuta liyalina glabra 3-nervis; ejus palea lanceolata acuta, binervis; TV 

 TlT am aequans, elliptica, in ^ superioro bifida, glabra, e sinu emittens 



