KTTNQL. SV. VET. AKADEMIENS HANDLINGAR. BAND 55. N:0 5. 



105 



a separate species. Possibly, however, the future might come to another result, when 

 the African Pusilloids have been full}' examined. 



The anatomy of the stem and the peduncle is constructed after the type of the 

 group but with a more or less complete supporting layer along the epidermis in both. 

 No subepidermal strands are observed in the peduncle. 

 The structure of the leaf is in accordance with that of the 

 panormitanus-leai with scarcely developed lacunar system 

 where, moreover, a few strands appear. The chief lateral 

 nerves run somewhat nearer the margin than the midrib 

 and join at a distance of a leaf-width from the very apex. 

 Without or within the primary side-nerves there appear 

 casually (in broader leaves) fainter longitudinal nerves, the 

 leaf consequently becoming 4— 5-nerved, at least in its 

 lower half. 



Distribution. South Africa, Drege, N:o 4458, b, 114. 

 10, 1206 (hb. Stockholm.) referred by Ar. Bennett to P. 

 pusillus L. under the name of v. ajricanus in L'Annuaire 

 du Cons. etc. de Geneve, 1905, 102. — King Williams 

 Town, 83, Leighton (hb. Stockholm.). 



P. antaiciis n. sp. 



Caulis 0,5 m altus compressus ramosus, a foliis sum- 

 mis dichotome ramosus, internodiis 4—6 (sum mo 5 — 8) cm 

 longis. Folia linearia 50 — 70 mm longa, 1,75—2,5 mm lata 

 3-nervia, nervo medio valido, basi attenuata, apice obtusa 

 brevissime mucronata. Ligulce caducse 8 — 10 mm longse, 

 eglandulosse vel subglandulosae, in spatio intercarinali 8 — 9- 

 nervise. Pedunculus brevis, 15 — 22 mm, spica densa triver- 

 ticillata. Stylus brevis, stigmate parvo. Fructus non visus. 



Fig. 41. 



Fig. 40. P. httdiiis HAO.STE. A, 

 B, Tops of stem-leaves, showing 

 the nervation and the different form 

 of the apex, \. C, Transverse sec- 

 tion of a stem-leaf (at the middle), 

 *, accidentally appearing secondary 

 side-nerves, n', lateral nerve, iii, 

 midnerve, stt; strands, ?, lacunar 

 along the middle vascular bnndle, 

 ca. 'y". D, Transverse section of 

 stem, \^. E, Pistil, side-view, \-. 

 F, Fruit side-view, ",". 



In habit this species resembles P. obtusifolius M. & 

 K. We find again also here the dichotomous ramification 

 from the base of the primary spike (D-type), but the inter- 

 nodes are in general more elongated, with the one next un- 

 der the primary spike longest, 5—8 cm. Also the short pe- 

 duncles remind of the same species, to which is to be added, 

 that the stem likewise has a somewhat compressed form, 

 with nearly imperceptible cusp, less prominent than is generally the case in P. 

 obtusifolius. The greatest difference lies in the nervation of leaves and stipules; 

 the lateral nerves of the leaves run at a greater distance from the margin, in the 

 middle between the margin and the outer line of the midrib, and are connected 



K. Sv. Vet. Akad. Handl. Band 55. N:o 5. 14 



The leaf-apex is obtuse 



