90 MR. ©. B. PLOWRIGHT ON CERTAIN 
otherwise so closely resemble each other as to be practically 
indistinguishable. Subjoined is a tabular summary of the 
cultures made to establish this. 
No. Infecting material. Plant infected. - Date of Date offi rst 
482. | Puccinia Phalaridis. | Arum maculatum. 25 April 6 May 
483. 9 ” 39 ” ,» : 7 May 
484. „ ” „ „ 39 10 May 
485. 9 »» ” 39) » 11 May 
486. „ ” ” ” „ 10 May 
487. » » » » » » 
488. ” » ” LE] „ 1] May 
598. » » » » 30 April | 15 May 
600. » » „ » . » 20 May 
510. | ZEcidium Ari. Phalaris arundinacea.| 2 May 12 May 
557. „n > » » 29 May | 16 June 
558. 39 » » » » » 
559. ” ” ” ” » » 
560. » ” ” » » » 
561. » » » » » » 
562. » » » » » » 
563. » » » » » ” 
564. LE » „ ” » » 
565. » » » » » 3? 
566. » » » » » 20 June 
567. LÀ 75 » „ , ” 
503. | | Puccinia Phalaridis. | Allium ursinum. 25 April 
504. » » Arum maculatum. » 11 May 
104. + » Allium ursinum. . 26 Feb. 
129. » » ” » 1 May pP 
157. » » 2 m) 29 May =— 
PUCCINIA ARENARIICOLA, n. sp.; soris parvis, nigris, nudis, 
linearibus vel elongatis, plerumque hypophyllis; sporis longos 
pedicellos preeditis, levibus, nullis, oblongisve cuneiformibus. 
I. Keidiospores.—Spots circular on the leaves, elongated on the 
stems, yellow, surrounded by a purple margin. Cups mostly 
hypophyllous, rarely epiphyllous, edges whitish, prominent, torn, 
everted. Spores subspherical or polygonal, smooth, yellow, 15 to 
20 mk. 
ll. Uredospores.—Sori brown, erumpent, linear or oblong, 
about °5 mill. long, surrounded by the torn epidermis, seated on 
yellowish spots. Spores globose or suboval, brown, finely echinu- 
late, 18 to 20 mk. 
TII. Teleutospores.—Sori small, black, naked, linear or elon- 
gated, mostly hypophyllous. Spores on long pedicels, smooth, 
dark brown, oblong or cuneiform. The upper cell usually darker, 
rounded and thickened above; lower cell somewhat attenuated, 
constriction not very marked ; 40 to 50 mk. long, by 20 mk. wide. 
amico ianuis iii 
