10 
Transactions of the Boyal Society of South Africa. 
Tropical Africa. British Central Africa, Nyassaland : Tanganyika 
Plateau, Carson ! Kavirondo, 4,000-5,000 ft., Scott-Eliott, 7041 ! Shire 
Highlands, Buchanan, 16 ! Adamson, 12 ! Zomba, 2,000-6,000 ft., 
Whyte, 95 ! Buchanan, 802 and 683 ! Purves, 70 ! Near Lake Nyassa, 
Simons ! Near Sochi and the Manganga Mountains, 3,000 ft., Kirh ! 
Ehodesia : Chimanimani Mountains, 4,500 ft., Johnson, 194! Swyn- 
nerton, 6208 and 233 ! Near Chirinda, 3,500 ft., Sioynnerton, 233 ! 
The thinner, broader, distinctly dentate leaves and profusely branched 
inflorescences with slender lax branches usually suffice to distinguish this 
plant from its ally, A. longifolia, E. Mey., but the two species appear to 
insensibly pass into each other about the Tropic of Capricorn on the 
Houtbosch Eange, and it may hereafter prove advisable to regard the 
tropical as a geographical form of the Natal species. The extremes are, 
however, so distinct that I have ventured on a separation ; moreover, the 
petals of this are invariably shorter and narrower than the Natal species. 
7. A. COARCTATA, Dummer, sp. nov. 
Glabra, circiter -30 met. alta. Caulis erectus, teres, sulcatus, foliatus, 
superne racemoso-ramosus vel corymboso-ramosus, ramis rigidis paucis 
erecto-patentibus 2-2*5 cm. longis. Folia radicalia ignota ; caulina sub- 
coriacea, imbricata vel remota, amplexicaulia, adpressa vel adscendentia, 
infera 2*5-7"5 cm. longa, l*2-2-5 cm, lata, anguste ovata, apice obtusa vel 
acuta, margine minute et creberrime serrato-ciliata vel dentato-serrata et 
ciliata, pilis 2-4 mm. longis. Capitula congesta, 1*8 cm. diametro, 12- 
15-flora. Involucri segmenta majora 5, aliquando minoribus alternans, 
coriacea, 6 mm. longa, 3-3*5 mm. lata, acuta vel apiculata, nervata. 
Calycis dentes subacutse vel mucronatae. Fructus ad apicem muricatus 
vel minute muricato-costatus. Carpophorum persistens. 
A plant approximately 1 ft. high, glabrous. Stem erect, terete, sulcate, 
leafy, racemosely or corymbosely branched towards the apex, with rigid 
ascending, slightly spreading branches about 1 in. long. Kadical leaves 
not seen ; cauline imbricate or distant, subcoriaceous ; amplexicaul, 
adpressed or ascending, the lower 1-3 in. long, ^-1 in. broad, narrowly 
ovate, obtuse or acute at the apex, scarcely auriculate at the base, margin 
closely serrulate, ciliate or serrulate-denticulate-ciliate, with rigid hairs 1-2 
lines long. Flower-heads many, congested, f in. in diam., 12-15-flowered. 
Segments of the involucre 5, occasionally with smaller alternating; the 
larger 3 lin. long, li— If lin. broad, acute or apiculate, nerved. Calyx- 
teeth subacute or mucronate. Fruit muricate at the apex or minutely 
muricately ridged. Carpophores persistent. 
Tropical Africa. Nyassaland : Nyika Plateau, 6,000-7,000 ft. Whyte 
in Herb. Kew 156 ! 
