Tittmania] an enumeration of the bruniace^ 17 



globosum, veiTUcosum, glabrum, longitudinaliter sulcatum, brun- 

 neum. Segmenta calycina receptaculo longiora, erecta, rigida, 

 lanceolata, quam corolla breviora. Petala obovato-lanceolata vel 

 elliptica, obtusa vel rotundata, basi in unguem angustata. Stamina 

 inclusa. Stylus crassus, perbrevis. 



Central Eegion. — Ceres Div. : Cold Bokkeveld, 4500 ft., 

 Schlechter, 8874 ! 



A species allied to the preceding, but differing in the more 

 intricately-branched habit, shorter, scarcely flexuose twigs, spread- 

 ing or ascending, rarely adpressed, shorter and smooth, not 

 scaberulous leaves, and brownish receptacles. 



Prof. D. Oliver's annotations and MS. notes relating to 

 various species of the Order have been of considerable interest and 

 value in the elucidation of the more critical species. 



3. T. pruinosa Diimmer, sp. nov. affinis T. Oliveri, Diimmer, 

 sed foliis brevioribus pruinoso-scabriusculis baud levibus, floribus 

 minoribus brevius pedicellatis, foliis involucralibus paucioribus 

 late deltoideis, calycis segmentis receptaculo atropurpureo sub- 

 aequilongis, distinguenda. 



A densely branched shrublet, about 0-4 met. high, with short 

 rigid leafy scaberulous twigs ; leaves ascending or spreading, rarely 

 appressed, imbricate, linear lanceolate, obtuse or tipped by a black 

 mucro, trigonous, dorsally convexly keeled, scarcely exceeding 

 1 mm. in length, distinctly scaberulous, margin ciliolately denti- 

 culate. Flowers whitish, scattered, solitary in the axils of the 

 upper leaves and exceeding them. Involucral bracts 5-6, imbri- 

 cate, broadly ovate, investing the lower half of the globose verrucose, 

 dark purple receptacle. Calyx-segments erect, scarious, broadly 

 deltoid, as long as the receptacle. Petals, stamens and style as in 

 the preceding species. 



Central Region. — Ceres Div. : Stony slopes of the Skurfde- 

 bergen, near Gydouw, 4500 ft., Bodkin, Herb. Norm. Aust. Afr. 

 1153! 



V. THAMNEA 



Solander ex R. Brown, PI. Abel. 3 (1818) ; Brongn. ojJ. cit. 

 386 ; Sonder, ojj. cit. 324 ; Hooker, op. cit. 671 ; Oliver in Journ. 

 Linn. Soc. Bot. ix. 331 (1867) ; Niedenzu, op. cit. 134. Schinzafra 

 0. Kuntze, Rev. Gen. PI. i. 234 (1891). 



Key to Species, 

 * Flowers white, small, 2-4 mm. long. 



f Style scarcely half as long as the petals ; stigma 



capitate; leaves convex-carinate (3) tliesioides. 



If Style nearly as long or exceeding the petals ; 

 stigma simple ; leaves sharply carinate. 

 4 ovules to each loculus. 



Shrubby, erect ; twigs glabrous ; leaves 



entire (1) uniflora. 



Prostrate or decumbent ; twigs hirtel- 



lous ; leaves irregularly denticulate (5) hirtella. 

 2 ovules to each loculus. 



Leaves broadly trigonous, f mm. long (2) depressa. 



Leaves trigonous, i\-l^ mm. long (4) gracilis. 



Journal of Botany, Sept. 1912. [Supplement II.] c 



