l"l Uredinacese, Dictyosporse, Ravenelia. 



 



poris germ. pluribus; paraphysibus copiosissimis clavatis, 40-50 « 

 .VI 2, hyalinis, f ulvo-capitatis j teleutosoris amphigenis et petioli- 

 dis, minutis, vix 1 mm. diam., atro-brunneis ; teleutosporaruni 

 capitulis castaneo-brunneis, globulosis, 70-85*30-35, papillatis; 

 teleutosporis 5-6 in sectione diam., papillis hyalinis brevibus 3-4 

 supra praeditis, 33-3S « 17-20; cellulis cystoideis ovoideo-oblongis, 

 hyalinis, infra totum capitulum pendulis; pedicello hyalino, com- 

 posito, brevi, deciduo. 



llab. in foliis, petiolis ramulisque Mimosaj fragrantis, 

 Texas Amer. bor. (Aussin). — Affinis E. expansw. 



3. Ravenelia Longiana Syd. in Hedw. 1901 p. (128). — Soris ure- 1337 

 dosporiferis amphigenis, maculis nullis v. obsoletis, pallidis insi- 

 dentibus, minutis, sparsis v. aggregatis confluentibusque, pulveru- 

 lentis, pallide brunneis; uredosporis globosis, subglobosis vel elli- 

 psoideis, subtiliter echinulatis, flavo-brunneis, 20-27 a. diam.; soris 

 teleutosporiferis amphigenis, minutis, sparsis vel plerumque in 

 greges ca. 2 mm. latos aggregatis et confluentibus, pulverulentis, 

 atris; capitulis teleutosporarum irregulariter rotundatis, hemispha-- 

 ricis, levibus e sporis unicellularibus 5-7 in omni directione com- 

 positis, castaneo-brunneis, 55-90 \x. diam. ; sporis unicellularibus 



1 1-19 a. diam.; cellulis cystoideis numerosis, globosis v. subglo- 

 bosis, hyalinis 14-19 « 14-16, vix persistentibus ; hyphis pedicellum 

 constituentibus discretis haud conjunctis. 



Ilab. in foliis vivis Cassise Rcemerianie, Austin, Texas. 1338 



4. Ravenelia spinulosa Diet. et Hohv. in Bot. Gaz. 1901, pag. 336. 



- Soris amphigenis, erumpentibus, uredosporiferis, ochraceis ; ure- 

 dosporis ellipsoideis vel fere globosis, 18-23 <- 16-19, pallide brun- 

 neis, spinulis brevissimis vestitis, paraphysibus intermixtis; soris 

 ex capitulis teleutosporarum nigris, hemisplia;ricis, 75-110 \i. diam., 

 7-9 sporis, pallide brunneis formatis; sporis 11-17 <i. latis, 1-cel- 

 lularibus, apiculo usque 8 a. long. 



llab. in foliis Gassiae multiflorse, Oaxaca in Mexico. 



5. Ravenelia Usambarae Syd. in Ann. Mycol. I, 1903, p. 331. Soris 1339 

 teleutosporiferis epiphyllis, in greges rotundatos ca. 3-5 mm. diam. 

 concentrice dispositis, minutis, epidermide fissa cinctis, pulverulen- 



tis, obscure brunneis; uredosporis immixtis subglobosis vel late 

 ellipsoideis, echinulatis, brunneolis, ca 19-22 * 14-18; capitulis te- 

 leutosporarum rotundatis, 75-120 a. diam , ililute bruuneis e 6-9- 

 sporis in omni directione compositis, tuberculis minutis vix pro- 

 minulis prseditis, facile in sporas secedentibus ; sporis unicellula- 



