— 8 — 



Puccinia macropoda Speg. Fung. Arg. pug. II nr. 34. — Uredo 

 (Syn.: U. striolata Speg.) on Iresine elatior. 



Teleutospores unripe. The characteristic uredo-spores differ some- 

 what from the form on Iresine celosioides described by Spegazzini. 

 Especially the deviation from the globose-ovoid form is sometimes rather 

 great. (Oblong spore-individuals of until 40 ^ X 16 ;/ are to be found). 

 The striation of the membrane is often very steep (cfr. "transversim 

 conferte ruguloso-striatulo") sometimes parallel with the longitudinal axis 

 of the spore. The spots narrow purple-edged. 



St. Croix: Caledonia Valley 2.2.06 (nr. 1793). 



St. Jan: Cruz Bay 12. 2. 06 (nr. 1808). 



St. Thomas: Levenlund May 06 (nr. 1831). 



Puccinia Raunkicerii Ferd. et Wge. sp. n. PI. I, fig. 1. 



iEcidiis caules petiolosque incolentibus, dense gregariis, distorsiones 

 tumoresque saepe valde elongatas efficientibus , cupulatis; pseudoperidiis 

 albidis, margine subintegro. — iEcidiosporis subglobosis, ellipsoideis, 

 obovoideis, saepe angulatis, omnino irregularibus, subtiliter verruculosis, 

 cinnamomeis, sub vitro aurantiacis, 22—36 (nonnullis usque 50) fi x 

 16 — 25 fji, granuloso-farctis. 



Uredosporis teleutosoris intermixtis, subglobosis, ellipsoideis vel ob- 

 ovoideis, plerumque 26 — 31/z x 21 — 26^/, brunneo-flavis, aculeis validis, 

 deciduis, hyalinis obsessis. — Teleutosoris phyllogenis, maculas pallido- 

 flavas 1 — 2 mm diam. hypophyllas formantibus, amphigenis, plerisque epi- 

 phyllis, in greges orbiculares circulariter aggregatis confluentibusque, ca- 

 staneo-brunneis. Teleutosporis ellipsoideis, utrinque rotundatis, apice vix 

 incrassatis, medio non vel vix constrictis, crassetuiiicatis, brunneis, 32 — 

 40 fA X 22 — 26 /x (raro oblongo-obovoideis 45 — 50 fx long.), pedicello 

 hyalino, flexili, superne circ. 6 /u crass., deorsum attenuato, usque 55 fi 

 longo praeditis. 



Species haec uEcidium Rivinae B. et C. complectitur. 



In caulibus, petiolis foliisque Rivinae humilis in insula St. Thomas 

 Indiae occidentalis (leg. Raunkiaer). 



This autoecic species here described is the first Puccinia known on 

 a plant of the family of the Phytolaccaceae. The aecidia formerly described 

 by Berkeley and Cooke {Aecidium Rivinae, Fungi of Cuba nr. 606) 

 produce considerable deformities (hypertrophies and torsions) of the stems 

 and the petioles, and on the limbs are found numerous uredo- and teleutosori 

 of the fungus. Sori are. always applied on the overside of the leaf while 

 the corresponding parts of the underside appear as light yellowish spots. 

 As a rule a circle of lengthened sori appears round a bigger roundish 

 middle-sorus, the whole complex soon forming one confluent mass. Later 

 some sori may also appear in the light spot on the underside of the leaf 



