132 



latae, cochleatae, apice subrotundatae, coriaceae, plus mi- 

 nusve diliite ferrugineae, laeves, subopacae, integcrrimae, 

 fere ecarinatae, area dorsali atropurpureo-viridi, ovata, basi 

 cordata v. subtruncata, circiter 2 mm. longa notatae. Sepala 

 lateralia libéra, valde inaequilatera, oljlique lanceolato- 

 oblonga v. oblungo-elliptica, circiter 3 mm. longa, 1 — 1,25 mm. 

 lata, apice obtusa v. saltem obtusiuscula, ala carinali an- 

 gusta, fere calva v. basin versus et praecipue in parte 

 tertia média pilis brevissimis ciliato-scabridula. 



Guiana: Surinam, in arenosis inundatis, Mart. 1838 

 (Splitgerber n. 978, X. paraimsi immixta, in Herb. 

 Leiden); alla speciminareportavit Kappler (Plant. Surinam, 

 n. 176, in Herb. Stockholm). 



X. leptostachyae perafflnis et forte haud distinguenda, 

 formas intermedias tamen non vidi; recedit statura altiore, 

 spica basi apiceque distinctius attenuata, squamis arctius 

 imbricatis, infermediis pro rata nonnihil angustioribus 

 nec non sepalis lateralibus acutioribus. 



Xyris leptostachya Malme n. sp. 



• Caespitosa(saepe annua),radicibus tenuissimis.filiformibus. 

 Folia paullulum complanata v. angusta ensiformi-linearia 

 vulgo 3 — 4 cm. longa, vix 1 mm. lata, acuta v. apice 

 subulata, eciliata, laeviaglaberrimaque, saepe purpurascentia, 

 in vaginam abeuntia tertiam v. fere dimidiam partem 

 folii occupantem, superne lamina vix latiorem (ligula 

 subnulla), inferne sensim paullulum dilatatam, ferrugina- 

 scentem, laevem, subopacam, eciliatam. Scapi teretes, 

 ecostati, vulgo 9 — 13 cm. alti, circiter 0,5 mm. crassi, 

 laeves glaberrimique, basi vagina involuti subaphylla arcta, 

 3 — 4 cm. longa, in apiculum subulatum brevem excurrente, 

 inferne ferruginea subnitidaque. Spica multiflora, fusiformis 

 V. subcylindrica, 7 — 12 mm. longa, 2 — 2,5 mm. crassa; 

 bracteae infimae ovato-ellipticae, 2—2,5 mm.longae, obtusac, 



