Anabasearum Revisio. 



31 



Synonyma. Girgensohnia oppositiflora Fenzl in Led. fl. ross. III. p. 835. 



Girgensohnia Pallasii, heteroptera et gypsophiloides Bge. Rel. Lehm. p. 303. 



Noaea oppositiflora Moq. Tand. in DC. prodr. 2. p. 209. 



Halogeton oppositiflorus C. A. M. fl. ait. 1. p. 378. Moq. Tand. in DC. prodr. 



XIII. 2. p. 204 et pl. aut. 

 Salsola oppositiflora Pall. ill. pl. imperf. c. tab. 27 (et haec icon bona! spécimen 



vegetum delineans). 



Anabasis oppositiflora M. a Bieb. Mém. soc. nat. mosq. 1. p. 148; Schräder, 



Roem. et Schult. 

 Anabasis heteroptera Jaub. et Spach ill. pl. or. II. p. 45. tab. 134. 

 Chenopodium oppositifolium Willd. spec. pl. 1. p. 1307. 



Habitat in desertis uralensi-caspicis, aralo-caspicis (Pall., Claus! Al. Lehm.! Bor- 

 sczow!), songoricis (Schrenck! Kar. et Kir.! Ssemenow!), bactrianis (Al. Lehra.!), in 

 Persia media (Oliv, et Brug.! Belanger!), orientali (Bge. et Bienert!), Afglianistano 

 occidentah (Bge. et Bien.!) et orientali (Griffith!). Ѳ v. v. sp. 



Descriptio. Planta habitu valde variabih. E radice annua, denique lignescente, dura, 

 interdum crassitie pennae anatinae exsurgit vel caulis solitarius erectus, pedalis, imo altior, 

 tune jam infra medium brachiato-ramosissimus, interdum humilis 2 — 4 pollicaris tantum, 

 breviter brachiato-ramosus, vel caules plures adscendentes, tune ab ima basi ramis saepe 

 alternis quasi dichotomo-ramosissimi, vel denique caulis humihs a basi in ramos divari- 

 catos solutus. Articuli graciles, subtetragoni, praesertim superiores aequabiles, pilis bre- 

 vibus scaberrimi, plerumque glauci, in medio caule ramisque quam caeteri longiores, in 

 planta vegetiore 7—10'" longi, saepius breviores, in ramulis terminalibus florigeris infe- 

 riores rarius usque ad 4'" elongati, plerumque breviores, summi brevissimi, floribus sub 

 anthesi approximatis quidem, nec tamen imbricatis; in planta humili, solo aridissimo enata 

 omnes abbreviati, foUis tune etiam superioribus subulatis, ramis floribusque arcte congestis; 

 articuli infimi saepe lignescentes, cortice tune longitudinaliter rimoso, albicante, ita ut 

 planta facile pro fruticosa, caule perennante haberi potest. Folia opposita et basi connata, 

 ibi dilatata membranaceo- marginata, subulato-triquetra, spinescenti-mucronata, hispidula 

 et ad basin usque ciliolata, flexuosa, vel saepius recurva, inferiora 4 — 6"' longa, superiora 

 sensim breviora, sed in planta solo aridissimo enata etiam subfloralia homomorpha, ple- 

 rumque vero subfloralia ovo ta, breviter cuspidata, trinei'via, nervis lateralibus dilatatis. 

 Bracteolae naviculares, oblongae mucr(jnatae, margine hispidulae, florem bracteamque sub 

 anthesi saepius superantes. Calyx vix unquam sub anthesi lineam longitudine excedens, 

 fere Semper clausus, denique fructifer basi compressus circiter |'" latus, basi truncatus. 

 Sepala hyalina, oblongo-lanceolata, duo interiora parum angustiora, tria exteriora uni- 

 nervia, primum infra medium, tune demum, parte inferiore excrescente supi'a medium alae 

 vestigio munita, omnia acutissima, integerrima, apice recta in conum conniventia. Stami- 



