150 МЕ. A. ВАВСГАУ ON THE LIFE-HISTORY 
but in the cycle beginning with an secidiospore no spermatia are formed. The cycles 
may be represented graphically thus :— 
I. 
->Sporidium ‚== 
Mycelium. 
Spermatia. II. 
ZEcidiospore.————————M ycelium. 
— — Teleutospore. ZEcidiospore. Series II. ad inf. 
ы (Halt.) Teleutospore.————— - during vegetative 
(Halt.) activity of host. 
We have here, then, a new species, with very distinctive features, and I propose naming 
it Uromyces Cunninghamianus, after my friend Dr. D. D. Cunningham, F.R.S., whose 
beautiful researches in India in this as in other branches of botanical science are well 
known. Of the several groups into which the Uromyces have been divided, this species 
would come most nearly under Uromycopsis, Schröter; but it bears no trace whatever of 
uredospores. 
ОвомусЕз CUNNINGHAMIANUS, n. sp.; secidiis in soros orbiculares aggregatis, hypo- 
phyllis vel caulicolis, orbicularibus, minutis, 4-5 mm. diametro, inferne rubro- 
aurantiacis, superne rubris; æcidiosporis albo-luteis orbicularibus vel ellipsoideis, 
16 № diametro, tuberculatis ; pseudoperidiis albis, apice stellatim dehiscentibus, et 
strato uno cellularum externe incrassatarum compositis, 26х19 ш; Spermogoniis 
145 ш; uredosporis defectis; teleutosporis vero in secidiorum soris erumpentibus 
demum omnino eorum sedes possidentibus, atro-fuscos in soros congestis, ellipsoideis, 
fuscis, apice libero incrassato, levibus, se cum pedieelli fragmento avellentibus, 
26 x 24-44X 18 ш; sporidiis ovalibus, 12x 8—14 x 10, вере sporidia ipsis gerentibus. 
The гесійіа are produced only on newly unfolded leaves, and the mycelium causes 
considerable hypertrophy of the host's tissue. Тһе eecidiospores produce a germ-tube 
divided into two parts by a septum, each forming a narrow sterigma. "The spermogonia 
are produced only by mycelium formed by sporidium, are not numerous, and are of 
the usual form and structure. 
Habitat in leaves, stems, and floral parts of Jasminum  grandiflorum, Linn. 
N.W. Himalayas. | 
DESCRIPTION OF THE PLATES. 
| Рілте XLIX. 
Fig. 1. Terminal end of flowering shoot, showing three buds and a node attacked. 
stage. Nat. size. 
Fig. 2. Upper and lower surface of leaf, with two isolated patches of invasion. 
Nat. size, 
In teleutosporic 
In teleutosporic stage. 
