THREE FUNGI COLLECTED ON THE PERCY SLADEN 
MEMORIAL EXPEDITIONS OF 1910-11 and 
1912-13. 
By I. B. POLE EVANS, M.A., B.Sc., F.L.S. 
The following three fungi were kindly sent to me for determination by 
Prof. H. H. W. Pearson from his collection of plants made during the 
Percy Sladen Memorial Expeditions of 1910 — 11 and 1912 — 13. 
Uredo Augeae Pole Evans nov. spec. 
Soris uredosporiferis amphigenis, sine maculis, in greges orbicularcs 
concen trice dispositis, rotundatis, 1—2 mm. diam., epiderme vesiculosa diu 
velatis, postea nudis, epidermide fissa cinctis, obscure castaneis ; uredosporis 
subglobosis, ellipsoideis vel ovatis, aculeatis, brunneis, 21 — 25 x 27 — 31 g, 
episporio ca. 1^ — 2\g crasso. 
On living leaves of Augea ccipensis, Liideritzbucht. H. H. W. Pearson, 
No. 8029, November 1912 (Pole Evans, No. 8406). The same fungus was 
also found on material of Augea capensis preserved in formalin and collected 
by J. Burtt-Davy at Laingsburg in Prince Albert Division of the Cape as far 
back as November 7th, 1910. 
Ustilago Sladenii Pole Evans nov. spec. 
Soris olivaceo-atris, pulverulentis in rachidibus floribusque, eos omnino 
destruentibus ; spoils globosis vel subglobosis 5-6 g diam.; glabris, dilute 
olivaceis. 
In the flowers and branches of the inflorescence of a grass (probably 
Ehrharta sp.) Caries 1910 — 11. 
H. H. W. Pearson, No. 6728 (Pole Evans, No. 8409). 
Uromyces inaequialtus Lasch. 
On Silene spec., Namaroup., 12. ix. 1911. H. H. W. Pearson, No. 665/ 
(Pole Evans, No. 8407). 
The Botanical Laboratories of the 
Union of South Africa, Pretoria. 
