338 iMONOCRAPHIA POLYGAI.ACEARIIM. 



lon.nioi'es. ('.,ii'iij;i' liinlms cuciillatiis seiisiin in 1111,1,'iiiciiliiiii attriui:itiis. (Irisla 

 liilob.i, lohis iniillififlis. Petala sii[)eriora carina evoliila '/, lueviora, per '/, '"'" 

 liiljo staminali connata, hasi ciineala. nii'ilia parlo contracta, linilxi siihqnadran- 

 giilari, niargine sérrnlatn, vel late ligulari nec emarginato nec olili{|ue trnncatn. 

 Antheran quani filanienta glabra .Splo breviorcs. Ovarinni snborliicnlarc longe 

 ciliatum. Stylus tennis aMpialis ovario cca. :tplo iongior. Stignia inlerins vix proini- 

 nens, superins erectnni levltei' vaginatiini.pilosuni. Capsula elliptica.inargine ciliata, 

 alis fere dupio brevior, marginibns angustissimls ciricta. Seniina cyliiulrica, pills ad- 

 pressis sericea et basi coronani plloruin longoruni ferentia oca. 3 mm. ionga.llarnn- 

 cnla nncinata, seniini snpej'posita carnnsa niargine inleriore vix membranacea. 



a angustilolia, l'oliis linearibns '",' nini., pelaljs snperioribus Ilinbo elliptico 



apice semiiato haud ilnplo longiore ipiain lato. 

 (5 ramosissinia, l'oliis i'lii|itico-obloiigis, petalis superioriiiiis linibo semiiato. 



vix longiore quani lato, alis iongissinie ciliatis. 

 y liepressa. foliis elliptiris vei elliplico-oblongis, petalis su|ieri()i-ibns liniho 

 ligniari angnstn duplo longiore (|uani lato, alis minus cilialis. 

 Species variahilis. in Africa fequatoriali occideiitaii l'ère ubiqne in arenosis repe- 

 ritur, a piovincia Angolensi, Congo et Niger ad Senegambiani et Aelliiopiani a?gyp- 

 tiacam usque ad (lumen Balii-el-Gliazal (Nilus snp. ) transit. 



Baikies Niger Exped. l8o7, n" 1804; Afr. (ieseli. : Soyaiix, n" 10."), in l'onte 

 negra ad meridiem; Sclnveinl'. Keis. n. c. Afr. n° ii\'i. Zeriba (ibattas; freqnens 

 in cuitis Senegambia', Lecard, 293 (Hb. Deless.): l'orra. 7 Scliweinf. c.Afr. n" 2117, 

 pp, /.eriba Ciliattas. 



P. SCIIWEINFURTIII, n. sp. 



Ilacemi magni, den.se cylindriciilolia magna; al.T sidielliptica' oblusa' vel ovalo- 

 elliptice; petala snperiora retusa. 



Tah. noslra XXVII, tig. 37. 



Schweinfarth, Central Africa, n" 2.Ï27. 



Radix annua, tenuis, peipendicularis. (^auiis tinicus, 10-30 cm. longus. subsim- 

 plex, berbaceus, birsuins, leviler striatus, temiis, 1-1 ,5 mm. l'rassus. Kolia alterna, 

 in canle minora, snperiora midto m.ajora et snb rai-emo condensala enmi|ue invol- 



