450 GRAMiNEiE Tragus 



TRAGUS (Hall. Helv. 2, p. 203. — Lappago Schreb. 

 Gen. p. 131). 



SpiculsB a dorso compresspebiflorfe. Gluma inferior deficiens, supe- 

 rior membranacea pla?ia minima. Flosculns inferior neuter glumella 

 unica coriacea concava 5-7-coslata et ad costas ecbinata flosculum 

 hermapliroditum includente. Flosculi hermaphroditi glumella et palea 

 raembranacese oblongo-lanceolataj illa acuta, palea retusa Squa- 

 mulse binse truncatse. Stamina tria. Ovarium glabrum. Styli bini 

 lerminales distincli, sligmata plumosa supra mediani spiculam emer- 

 gentia. Caryopsis oblonga glumeilis inclusa sed libera hilo puncli- 

 formi. — Spiculee 2-4-nJE in fasciculos brevissime pedicellatos 

 racemum spicaeformem formantes disposilse. Spicula terminalis soepe 

 sterilis. 



1. T. racemosus (L. Sp. i ^81 suh Cenchro) annuus cespitosus, 

 culmis diffusis, foliis rigidis planis acutis brevibus margine aculeo- 

 latis, superiorum vaginis elongatis subinflatis, racemi laxiusculi fas- 

 ciculis 3-4-spiculatis, flosculi neutri glumelia lanceolata acuta ad 

 nervos 5-7 elevatos aculeis basi subconfluentibus uncinatis echinata 

 O. T. racemosus Hall. Helv. 141 3. Nees Gen. Germ. Ic. — Lappago 

 racemosa Willd. — Fl. Grac. tab. 101. — Rchb. Ic. Germ. fig. 514. 



Hab. in arenosis siccis regionum calidiorum ditionis a GrseciA. (Heldr I) et 

 Macedonia (Friv. Orpli I) ad Egyptum, prov. Caucasicas (Ledeb.), Affgtia- 

 niam (Aitch I). 



Ar. Geogr. Europa media et australis a Gallia, Helvetia et Germania aus- 

 tralibus ad regionem Danubialem et Rossiam australem,insul3e Canarienses, 

 India. 



2. T. decipiens (Fig. el Not. Agrost. ^.g. Fragm. p. 73, fig. 37, 

 sub Lappago) annuus cespitosus, culmis brevibus difl^nsis, foliis rigi- 

 dis planis acutis brevissimis superiorum vaginis elongatissubinflalis, 

 racemi laxiusculi fasciculis saepius bispiculatis, flosculi neutri glu- 

 mella lauceolata acuta ad nervos subquinos elevatos aculeis subdis- 

 tantibus a basi incrassala subulatis non uncinatis echinata ©. T. 

 brevicaulis Boiss. Diagn. Ser. I, 13, p. 44. 



Hab. in Persia australi (Auch. 5472). 



Forsan ut omiies Tj-agi species propositse tantum varietas T. racemosi a 

 quo glumell» aculeis dissitis et rectis tantum diflfert. 



Ar. Geogr. Arabia Felix, Nubia, Abyssinia. 



BEGMANNU (Host Gram. III, tab. 6). 



Spiculae biflorae in rachi communi spicse biserialse et unilaterales 

 compressae flosculis sessilibus sequalibus. Glumae binge subcoriaceae 



