MITlEILüNGEiN AUS DEM BOT. MUSEUM DKR UMVERSIT.ET ZURICH. XXI. 1025 



scariosis et microscopice serrula lis vel erosiilis, receptaculo piano, flos- 

 cuiis omnibus hermaphroditis, corollarum lobis sursum recurvis, anlhe- 

 rarum caudis barbellalis, achseniis brevibus la te lurbinatis densissime 

 villosis, pappi selis exlerioribus allenualis quam interiores pauUo latiores 

 brevioribus omnibus scabridis slramineis. 



Deutsch-Südwest-Afrika : Hererolaud, Windhoek, Dinier 1245. 



Folia 0,5—1.5 cm long.. 0,1—0.2 cm lat., liorum costa media subtus 

 eminens. Capitula pansa 1.0 cm long., 1,2 cm diam. Invohicri phylla 

 extima 0,4 — 0,5 cm, inleriora 0,6—0,7 cm, intima 0,8 cm long. Corollae 

 tubus vix 0,3 cm long.; limbi lobi anguste lineares, oblongi. 0,5 cm long. 

 Achsenia 0.2 cm long., et tolidem diam. Pappus 0.7 cm long. 



Evidently closely allied to D. Nachtigalü 0. Hotïm. a plant unknown 

 to me, which is described as a very densely leaved shrub with spathu- 

 late leaves 4 mm broad and tomentose on both sides; ils capitula hâve 

 15 — 20 florets and are 14 mm long and broad, and the involucral leaves 

 are linear or lanceolate. 



Dicoma fè, Pterocoma) membranacea S. Moore spec. nov. — 

 Herbacea, caulibus e rhizomate parum incrassalo fibrillaslongassimplices 

 rigidas graciles emittente ascedentibns abunde foliosis dense albo- 

 araneoso-tomentosis, f'oliis sessilibus oblaiiceolato-obovatis nunc obtusis- 

 simis nunc obtusis nunc apice pungentibus margine evanide denticulatis 

 decurrentibus tenuiter membraneceis supra piloso-villosulis mox glabris 

 subtus albo-araneoso-lomentosis, capitulis mediocribus circa 20-flos- 

 culosis ad apicem caulium in corymbo brevi paucicapilulato dispositis, 

 pedunculis propriis quam capitula brevioribus bracleis rigidis in invo- 

 lucri phylla extima Iranseuntibus onustis, involucri campanulati flosculos 

 bene superantis phyllis circa 10-serialis extimis insigniter brevioribus 

 et deinde retlexis exterioribus lineari-lanceolalis una cum interioribus 

 lanceolatis necnon margine scariosis longe spinuloso-acuminatis crebro 

 ciliolatis intimis oblongis scariosis pauUo abbrevialis omnibus subniten- 

 libus et in sicco dilutissime griseo- virescentibus, receptaculo alte 

 foveolato, tlosculis omnibus hermaphroditis. corollarum lobis erectis, 

 antherarum caudis brevissime barbellatis, achseniis circa 7-costatis inter 

 costas dense villosis, pappi albi setis exterioribus interioribus confor- 

 mibus nisi brevioribus omnibus breviter phimosis. 



Südwest-Afrika : Uukuanyama, Omupanda, Rautanen. 



Circa 20.0 cm alt. Folia 10,0—14,0 cm long, (summa vero breviora 

 sc. 5,0—7,0 cm), 2,5—4,0 cm lat., penninervia. Corymbi 4,0 — 5,0 cm 

 diam. Involucra 2,0 cm long., 1,3 cm lat.; phylla extima 0,6 — 0,8 cm, 

 interiora 1,5— fere 2,0 cm long. Receplaculi foveolae circa 0,2 cm alt., 

 irregulariter denlatse. Corollae 1,0 cm long, tubus limbo sequilongus. 

 Antheree apice obtusae. Acheenia 0.3 — 0,5 cm long. Pappi selae exteriores 

 circa 0,6 cm, interiores fere 1,0 cm long. 



Allied to D. sessiliflora Harv. but the heads are not sessile in the 

 axils of the leaves and the broad membranous leaves are entirely différent. 

 Among other discrepancies may be mentioned the shallower foveolae 

 of Ihe réceptacle of D. sessiliflora, its larger corollas wilh the limb 

 markedly longer than the tube, apiculale anlher-tips and more markedly 

 barbellate anther-tails. 



