518 GRAMiNEiE Agrostts. 



Sect. III. APERA Ad. — Glumella adest. — Rudimenlum floris 

 secundi stipitiforme et palea adsunt. 



12. A. Spica venti (L. Sp. 91) annua, culmo erecto elato, 

 foliis plauis latiuscule iinearibus asperis, ligulaelongata lacera, pani- 

 cul;c elongatce ampl?e difi"usae ramis semiverticillatis inaequalibus 

 capillaribus trichotomis pedicellisque asperis, glumis ineequalibus 

 lanccolatis acuminatis carina scabris, glumella glumis sublongiore 

 acutu sub apice arista tenuissima flexuosa spicul^ 4-8-pIo longiore 

 aucta, antheris lineari-oblongis Q. Host Gram. t. 47. — Engl. Bot. 

 tab. 951.- Rchb. Germ. fig. 125. — Apera Spica venti Pal. de B. 



Hab. in cultis propsertim inter segetes, Tauria (Stev.), prov. Caucasicse 

 (M.B C. Koch.). E ditione nondum vidi. 



Ar. Geogr. Europa media ab Anglia et Scandinavia australi ad Rossiam 

 medi^im et ab Hispania boreali ad Italiam septentrionalem et regionem 

 Danubialem. 



13. A. interrupta (L. Sp. 92) annua, culmis erectis gracilibus, 

 foliis planis angusle linearibus asperis. ligula lanceolata lacera, pani- 

 culn3 angiist?e contractse ramis semiverticillatis fere a basi spiculife- 

 ris pcdicellisque scabris, glumis inaequalibus lanceolatis acutis, giu- 

 mella glumis subfequilonga acuta undique asperula sub apice aristd 

 tenui-ssima flexuosa spicula quadruplo longiore aucta, antheris sub- 

 rotundo-ovatis Q. Host Gram. tab. 48. — Rchb. Germ. fig. 123. 



Hab. in arenosis, cultis, ad muros, Lydia in latere meridionali Tmoli 

 (Boiss!), Phrygia (Tchih!), Gappadocia ad Cciesaream (Bal!), Mesopotamia 

 inter Orfa et Suerelc (Ky. 42!). Babylonia ad Bagdad (Noe G951), prov. Cau- 

 casicse (M. B.) 



Ar. Geogr. Europa media et australis in Gallia, Belgio, Helvetiii australi, 

 GermaniA, Hispania, Lusitania, Italii\, regione Danubiali, Rossia australi. 



GASTRIDIUM (P. de B. Agrost., p. 21, tab. 6). 



Spiculae uniflorse herraaphrodilse a latere compressse flosculo ses- 

 sili. Glumre binse membranacese carinatoe acutas sspius basi ventri- 

 cosc-e flosculo multo longiores. Glumeila et palea membranaceae 

 minima}. illa latior apice truncato-denticulata vel biseta, sub apice 

 vel ad basin arista geniculata aucta vel mutica. Squamuloe binae. 

 Styli 2 breves, stigmata plumosa ad basin spiculffi emergentia. 

 Caryopsis obovata macula hilari punctiformi glumellis obtecta sed 

 lil)cra pcricarpio non solubili. — Herbac facie Phlei. — Genus ab 

 Agrosfide glumis basi plus minus ventricosis et flosculo non stipitato 

 distinctnm. G. nitens glumis basi lion ventricosis et arista basali 

 transilum inter hfec genera prsebet. 



