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SOCIEDADE BROTERIANA - Biblioteca Digital de Botânica ...

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13 S<br />

51. Cœoma Mercurlalis Link Sp. II, p. 35; Uredo conduens var. Mercurialis<br />

Martius Prodr. Fl. Mos'q. p. 229 ; Uredo confluens Berkeley<br />

!. c. p. 11.<br />

Sur les tiges et les feuilles du Mercurialis annua «prope Pedrouços<br />

et Rio <strong>de</strong> Archeis frequens», 13 Fevr. 1849; in agro Olisipp.<br />

pr. Archeis freq.» Mars 1849, Welwitsch.<br />

52. Caeoma Ricini Schlechtendal in Linnea I, p. 612; Uredo Ricini<br />

Bivona­Bernhardi Man. III, p. 10; Physonema Ricini Berkeley<br />

1. c. p. 6.<br />

Sur les feuilles du Ricinus communis «in horto bot. Aju<strong>de</strong>nsi, sat<br />

frequens temp, pluv.» Nov. 1843, Welwitsch.<br />

OBS. Les spores sont ovi<strong>de</strong>s, pourvues d'un épisporium incolor aculéé,<br />

longues <strong>de</strong> 20­24 μ et larges <strong>de</strong> 16­20 υ.; elles sont accompagnées<br />

<strong>de</strong> paraphyses capitellés.<br />

53. Uredo africanus nov. spec.<br />

U. soris hypophyllis, aureis, numerosis, angulosis, confluenlibus, superficiem<br />

inferiorem folii infecti saepe obducentibus ; uredosporis<br />

plus minusve reniformibus, 27­33 υ. longis, ca. 18 μ. latis, membrana<br />

ochroa aculeata praeditis ; paraphysibus nullis.<br />

Hab. «frequens (etiamsi hoc único loco a me observât.) ad folia<br />

plantae herbaceae ex ordine Rubiacearum, in pratis humidis inter<br />

rivum Ema et lacum Ivantala» in Angola Africae; Apr. 1860,<br />

Welwitsch It. Angol. N. 130.<br />

54. Uredo Hijdrocolyles Montagne Prodr. J. Fern. η. 59.<br />

«Ad folia Hydrocotyles», Fontainebleau (France, 7 Sept. 1850.<br />

Bridgetown, Barbados, le 16 Oct. 1889.

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