flowered pistillate spike, starting directly Irom the base on a slender stalk, /. rhizogyna. 

 Some of the specimens are distinctly intermediate to Carex sparsiflora (Wahlenb.) 

 Steud., and may possibly have to be regarded as bastards between these two species. 

 Quite typical specimens of Carex sparsiflora do not, however, occur in my collections. 



Distribution: The species is distributed nearly all over Europe, except the extreme 

 south, western and northern Asia from Caucasia through Turkestan and Siberia to 

 Baikal. Introduced into North America. 



Carex displodens nov. spec. [Tab. IV, Fig. 2]. 



Culmus 25-M cm. alius, tener, plus minus inclinaius, leviler angulalus, sulcatus. 

 Folia dimidium longitudinis culmi, laxa, angustissima, 1-2,5 mm. lata — fere 1,5-2 mm. 

 lata — plana, in acumen longum, paene 



flliforme producta, margine scabra, 



colore oleagineo, vaginis suffuscis. Spi- 



culae vulgo 3, distantiores ; terminalis 



musculo, 8-12 mm. longa, 2-3 mm. lata, 



laterales femineae, 10-15 mm. longae, 



3-4 mm. latae, muliiflorae et densi- 



florae, perlonge pedunculatae, peduncu- 



lis capillaribus, plus minus laxis, tereti- 



bus, glabris vel puree scabris. Bracteae 



foliaceae, longe vaginanles, contractae, 



laminis angustis, attenuatis, spiculam 



superantibus. Squamae floris femineae 



late ovatae, parvulae, plus minus 1-1,5 



mm. longae, slramineo-virides, paene 



omnino hyalinae, apice rotundato vel 



late acuminata, 3 nerviae, media distinc- 



ta, laterales minus conspicuae. Utriculi 



immaturi cum squamis aequilongi, ma- 



turi circa V5 longiores, late fusiformes, 



1,5-2 mm. longi, triangulati, dare viri- 



des, fere membranacei, translucidi, 



glabri, enervii, in summis lateribus spi- 



culis paucis, exiguis praediti, adversus 



basin in stipitem brevem, crassum attenuati, apice obtuso, integro, erostrato. Utriculi 



semper directly nunquam obliqui. Nuce adolescenle, ulriculus disploditur. Nux late 



ovaia, distincte trigona, lateribus concavis, inferne breviter stipiiata, superne stylo breviore, 



subcglindriaco praedita. Stigmata 3, longitudinis mediocris. 



The species is especially distinguished by its slender, frequently slightly relaxed 

 and recurved culms that are glabrous, nearly round, and slightly furrowed. The re- 



Fig" 77. Carex displodens nov. spec. ('%). a and b. 

 Glumes of pistillate flowers. — c. Young flower, 

 d— g. Various stages of fruit formation; in h the 

 perigynium has been burst by the nearly mature 

 nut, in i the nut is visible through the nearly hy- 

 aline perigynium. — f and g. Nuts. 



17 



153 



