Ph aenosperm a GRAMINEAE Zoysia 



palea: grain globose, exposed at maturity. Monotypic. (Greek: phaino, I appear, and 

 sperma, seed, in allusion to the turgid caryopsis pressing the lemma and palea apart 

 at maturity.) 



1. Phaenosperma globosa Munro (Mak.F.832). Culms 1.0-1.5 m. high; fls. V; fr. 

 VI. Temperate eastern Asia; locally in An., Che., Ki., Ku. Ravines and shady 

 woods. Fig. 431. 



49. Sphaerocaryum Nees ||||j£ 1 % M (Yuan Su Ts'ao Shu; 

 Round-grain-grass Genus) 



Slender annuals with cordate blades and small panicles: spikelets minute, dor sally 

 compressed, without prolonged rachilla, falling entire or the glumes more readily 

 deciduous: glumes hyaline, the first shorter, nerveless, the second 1 -nerved, equaling 

 or a little shorter than the floret; lemma and palea subequal, thin, minutely puberulent. 

 Monotypic. (Greek: sphaira, a sphere, and karuon, a nut, alluding to the spherical 

 fruits.) 



1. Sphaerocaryum malaccense (Trin.) Pilger (S. pulchellum Merr.)(L.SJ.7:199). Culms 

 10-30 cm. high; fls. X; fr. XI. India to southern China, Formosa and Malaysia; 

 locally in An. Marshes and moist or shady ground. 



" Isachne pulchella Roth, the basis of Sphaerocaryum pulchellum Merr., pioves to be a 

 species of Isachne." — Agnes Chase. 



Tribe VII. Zoysieae jj£fg£j£ (Chieh Lii Ts'ao Ts'u) 



Spikelets 1-fld., perfect or mixed with staminate ones when in fascicles, disarticulat- 

 ing below the glumes or each fascicle falling off as a whole from the main axis: 

 glumes 2 (the first wanting in ours), coriaceous or membranaceous, frequently awned, 

 the first sometimes minute or wanting; lemma always awnless, membranaceous or 

 hyaline; palea sometimes obsolete: inflorescence a spike-like raceme or a spike; the 

 short pedicels frequently more or less flattened or thickish. 



A single genus in our flora 50. Zoysia 



50. Zoysia Willd. i£M^?-M (Chieh Lii Ts'ao Shu; Knotted-strands Genus) 



Low perennials with creeping rootstocks and spike-like racemes: glume 1 (the first 

 wanting), coriaceous, shining, strongly laterally compressed, minutely awned or awn- 

 less; the margins connate below; lemma and palea much smaller, thin, the latter 

 sometimes none. Five species, temperate Asia to Australia; three in China. (After 

 Karl von Zois, 1756-1800, German botanist.) 



Key to the Species 



Spikelets 3-4 mm. long: blades flat, rather stiff 1 . Z. japonica 



Spikelets 5-8 mm. long: blades lax 2. Z. sinica 



1. Zoysia japonica Steud. Japanese Lawngrass (Mak.F.831). Culms 15cm. high; fls. 

 IV; fr. V. Eastern Asia; locally in Che., Ki., Ku. Meadows and sandy slopes. 



2. Zoysia sinica Hance (J.B.1869:168). Culms 15-30 cm. high; fls. V; fr. VI. 

 Eastern Asia; locally in Che., Ku. Sandy beaches. Fig. 432. 



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