646 Dothideacese, Phragmosporae, Montagnella. 



Sect. 5. Phragmospore Sacc. 



MONTAGNELLA Speg. F. Arg. Pug. IV, n. 188 (Etym. ab ill. C. Mos- 

 ke). Stroma matrici innatura, orbiculariter expansum, v. va- 

 rie effusura atrum, planum. Loculi cum stromate homogenei, exer- 

 ti, superficiales, globosi. Asci octospori, elongati. Sporidia diu di- 

 dyma hyalina, postremo 3-septata fuscescentia. — Genus loculis 

 prominenti-subsuperficialibus mox dignoscendum, sed species plu- 

 res, ignota fructificatioue, adhuc dubia?. 



1. Montagnella Heliopsidls (Schw.) Sacc. Dothiaea Heliopsidis Schw. $ m 

 Car. n. 69. Ellis Am. Fungi n. 682! — Ambiens, in crustam elon- 

 gatam stipata, loculis prominentibus truncato-rotundatis, umbili- 

 catis, papillatis, atris, intus albofarctis; ascis cylindraceis breve 

 stipitatis, 90^10, octosporis; sporidiis oblique monostichis v. sub- 

 distichis, fusoideo-oblongis, subinde curvulis, 3-septatis, 28-30 ^ 

 4-5, e hyalino luteolis. 



JFab. in caule subvivo v. emortuo rarius in foliis Heliopsi- 

 dis in Carolina et New Jersey Amer. bor. — Loculi numerosi, 

 admodum conferti; sed fere liberi, laeves, epidermide innata tecti, 

 subnitidi, basi stromate communi atro juncti. In foliis occurrunt 

 raaculse steriles aut uno alterove tuberculo ornatae, scd ad caules 

 et nervos crustam 2-3 uncialem constituit. 



2. Montagnella tordillensis Speg. F. Arg. Pug. IV, n. 189. — Stro- 53g9 

 matibus orbicularibus 1-2 mill. diam., hinc hiurte sparsis, amphi- 

 genis, erumpenti-innatis, atris, carbonaceis, in seneetute subobli- 

 teratis ac frustulatim secedentibus, foliumque perforatum relinquen- 

 tibus; loculis semiexertis, hemisphsericis, parvulis, 150-180 w. diam., 

 dense peripherice aggrogatis, giaberrimis, atris, subcarbonaceis, 

 astomis (l); ascis obclavatis, sursum rotuadatis, deorsum abrupte 



ac breve pedicellatis, 70-80 ~ 14, octosporis. aparaphysatis; spori- 

 diis distichis v. tristichis, cylindraceo-elongatis, ulrinque obtusiu- 

 sculis, 18-20 »5, rectis v. subcurvulis, primo medio 1-pseudosep- 

 tatis, dein 1-septato-constrictulis, hyalinis (verisimiliter demum 

 3-septatis, fuscis). 



IFab. ad folia viva Jodinae rhom bifoliae in sylva austra- 

 liore, Tordillo, ac prope Pueblo Lavalle, Argent. Amer. ber. 



3. Montagnella Curumamuel Speg. F. Arg. Pug. IV, n. 188. — Stro- 5330 

 matibus orbicularibus, 1-2 raill. diam. , solitariis vel gregario- 

 confluentibus, tenuibus , matrici innatis, atris, ambitu vage de- 



