1012 BULLETIN DK l'hERBIKK BOISSIKI'. (2'oe SÉR.). 



utrinque angustalis 13-flosculosis, involucri circa 7-senalis phyllis arcte 

 imbricatis exterioribus brevioribus oblongis obtusis inlermediis oblongo- 

 lanceolalis intimis lineari-lanceolatis acutis integris omnibus cruslaceis 

 slramineis nileritibus glabris, receptacuio alveolato, achaeniis compressis 

 oblongis sursura nequaquam coarclalis basi dense villosis, pappi setis 

 copiosis rigidis diliite stramineis scabridis longioribus achsenium fere 

 4-plo excedentibus. 



Deutsch -Südwest -Afrika : Gross-Namaland , Jai<.alskopje, Dinter 

 1197. 



Folia 0,8 — 1,0 cm long.. 0.1 cm lat. Capitula pauUo ultra 2,0 cm long., 

 summum 0,6 cm diam. Involucri phylla exteriora circa 0.8 cm, inter- 

 media 1,0 — 1.7 cm, inlima 1,0 cm long.; intermedia 0,4 cm, inLima 

 0,2 cm. lat. Corollae in toto 0.55 cm long., lulese; lobi 0,15 cm long. 

 Styli rami (appendice angustissime lineari-lanceolata sat elongata inclusa) 

 0,35 cm long. Achsenia 0,22 cm long., fusca. Pappi setse longiores 

 0,8 cm long. 



Near Pt. liicüioides DG. but told al once from thal species by ils 

 différent flower-heads. 



Pteronia unguiculata S. Moore nov. spec. — Fruticulosa, 

 subintricate ramosa, glabra, ramis allenuatis quadrangiilaribus junioribus 

 foliosis, foliis oppositis nunc aliquanlulum sparsis nunc e\ apicibus 

 ramulorum perbrevium oriundis quasi verlicillaLis oblongis sublriquelris, 

 capilulis parvis solitariis sessilibus anguste ovoideis 10-flosculosis, invo- 

 lucri phyllis circa 12-serialis ovalis apice breviler unguiculato-mucronatis 

 margine scariosis ibique integris vel fere integris, corollis involucra 

 brevioribus, styli ramis elongatis appendicibus mediocribus onustis, 

 achaeniis turbinatis densissime villosis, pappi setis copiosis quam achsenia 

 longioribus rigidis scabridis lutescentibus. 



Deutsch-Südwest-Afrika : Gross-Namnland, ! Gubub, Dinter 1233. 



Folia 0,3—0,5 cm long., 0,1 cm lat. Capitula vix matin-a 1.2 cm long., 

 0,5 cm diam. Involucri phylla 0,7—0,9 cm long., circa 0,5 cm. lat., 

 pauca basalia breviora. Corollae vix Ö.5 cm long., flavee. Slyh rami 

 0,2 cm long., appendice vix 0,1 cm long, haud exempta. Achsenia 

 0,22 cm, pappus fere 0,5 cm. long. 



This is evidently very close to Pt. cylindracea DC. which iL greatly 

 resembles in habit. On carefiiliy comparing il. however, wilh De Can- 

 dolle's type (Burchell 1603) différences in llie capitula are at once 

 not.iced which render it impossible toconsider the two of identical species, 

 Dinter's plant has relatively short and narrowly ovoid heads. while those 

 of Pt. cylindracea are long and strictly cylindrical. and this gives the 

 two plants qui te a diverse aspect. Moreover the edges of the involucral 

 leaves, which are entire or very nearly so in the case of Pt. unguiculata, 

 are in the other ciliate-lacerate. 



Pteronia Dinteri S. Moore nov. spec. — Ramis validis cinereis 

 ssepissime nudis ramulos brèves dense foliatos gerentibus, foliis oppositis 

 basi connatis deorsum arcle imbricatis lineari- oblongis obtusis dorso 

 carinalis margine scabi'ide ciliatis, capitulis parvis solitariis turbinatis 

 5-flosculosis, involucri circa 6-serialis phyllis oblongis exterioribus 

 brevioribus cilialis et uncinulo brevi patente recurvove onustis inle- 

 rioribus longioribus oblusi.ssimis glabris, flosculis breviter exsertis, 

 receptacuio alveolato, achseniis turbinatis apice brevissime coarctalis 



