﻿Contributions to the Flora of Mt. Morrison. 



by 

 B. Hayata. 



Assistant in the Botanical Institute, Science College, 

 Imperial University, Tokyo. 



Aira Kawakamii Hayata sp. nov. Gramina perennia, 18-20 cm. 

 alta. Folia ad basin caulis conferta, superiora alterna, circ. 8 cm. longa, 

 vaginis 4-5 cm. longis, ligulis membranaceis acutis 2 mm. longis, laminis an- 

 gustis 3-4 cm. longis, convoluto-teretibus. Panicula 6-7 cm. longa laxe florata, 

 ramulis et pedicellis ternatis 2-3 flomtis basi tortis. Spiculae 9 mm. longae, 

 2-florae, parvae : rhachilla sub glum is florentibus articulata, hirsuta, ultra 

 ilores non producta, floribus hermaphroditis. Glumae tenuiter meinbranacea?, 

 2 inferiores sub articulatione persistentes vacuaB, 8 mm. longaa, roseo-pur- 

 purese, 1-nerviao. acuminata?, subaequales ; florentes membranacese fere 

 hyalinse, apice 4-dentata3, 6 mm. longa3, arista infra medium dorsali tenuis 

 basi torta 8 mm. longa ; palea angusta gluma parum brevior, hyalina, 2-nervia. 



Hab. ad verticem montis Morrison, leg. T. -Kawakami, Nov. anno 1905. 



The above described grass is very like to DescJmmpsia on account of 

 its ascendent caulis and convoluto-terete leaves. But its spicule shows no 

 production of rhachilla and therefore this can not be referred to Descliampsia 

 but should be referred to Aira. The grass is very remarkable by its beauti- 

 ful colored spicules more shining than those of Descliampsia flexuosa which 

 sometimes shows great beauty in its young shoots. 



Hoeckia Aschersoniana Engl, et Gkaebn. in Diels, Fl. Centr. 

 Chin, in Engl. Bot. Jahrb. XXIX. p. 598. 



Hah. Morrison, leg. T. Kawakami, anno 1905, Nov. 



This interesting genus was first found in Central China. My Morrison 

 species should be referred to the Chinese genus, so far as I can judge from 

 the description. This genus is of especial interest on account of its being 

 an intermediate form between Patrinia and Valeriana. My specimen is 

 rather a dwarf form, attaining only to the height of 6-7 cm., and its leaves 

 are much smaller. 



