AEiIDILM-FURMS. 409 



Aecidium pseudocolumnare Kiilin.' Occurs on needles of 

 Abies pcdinata in Germany ; in Britain, however, on tliis and 

 several other species of Ahics. It is distinguished by its large 

 white spmes from the Air. ruhininarc of Calyiitofipom (p. ^72). 



Aec. Magelhaenicum ]5erk. This species occurs on various 

 species of barberry. The mycelium hibernates in the shoot- 

 buds and causes them to develoj) as witches' brooms, l^earing 

 on the lower surface of their leaves aecidia with long, white, 

 sac-like peridia. The allied teleutospore-form is as yet unknown. 



Aec. clematidis 1). T. (Britain and U.S. America). On Clematis Vitalha, 

 ('. /-iji'tii, and otlier spec-ies. It is related to Puccinia <H]ropyri Ell. et Ev.- 



Aec. Englerianum Henii. et Lind.-* prtjduces a peculiar antler-like 

 liraiiL-liing of the twigs and leaves of a Clematis at Eritrea (Lytri) in the 

 (Grecian Archipelago. 



Aec. punctatum Pers. {Aec. quadrijidum D.C.) (Britain and U.S. America). 

 This is a common species on Avcinoae (Fig. 190) and Eranthis. The 

 aecidia have white peridia, which on dehiscence break into four lobes. 



Aec. leucospermum 1). C. (Britain and U.S. America). On Anemone 

 lo'inorosa (Fig. l!jn). 



Aec. hepaticae Beck. ()n Anemone Hepatica. 



Aec. ranunculacearum D. C. (Britain and U.S. America). On species 

 of Ranunculus. A collective name for aecidia of several s])ecies of Uromyres 

 (p. 336), and Puccinia (p. 349). 



Aec. aquilegiae Pers. (Britain and U.S. America). On Aijuileiiia 

 ,-,'f(/>iri.^ and other species. (See Puccinia agrostidis, p. 349.) 



Aec. actaeae (Opiz.). On leaves of Actaea spicata in Europe and America. 



Aec. barbareae D. C. On species of Barbarea (Britain). (See Pure. 



fr.-<tu<:ie, ).. 349.) 



Aec. circaeae ( 'es. ( )n sjiecies oi Circara. 



Aec. grossulariae Schum. (Britain and U.S. America). On Ptihes <1 ro.^i.i.u- 

 laria and R. ruhrum. Klebahn believes it is related to a Puccinia on Care.K. 



Aec. bunii I). C. On Conopodium denudaturn in Britain. (See Purr, 

 bistortae, p. 35.").) 



Aec. periclymeni Sihum. On species of Lonicera. (Britain.) (See I'urc. 

 festucae, p. 349.) 



Aec. compositarum. A provisional species-name for a large number of 

 aecidia frequenting Compositae, and by no means re.sembling each othei-. 



Aec. leucanthemi D. C. A European species with its Puccinia- form on 

 Care.)- montana. 



Aec. cyani T). C On Centau.rea Cj/anu.^. 



Aec. ligustri Strauss. On Piivet. 

 ' Jfedwii/la, 1884. 



-Dietel, Oesternirh botan. Z'itutu/, \A9'2. 

 ■'Engler's Botan. Jahrbwh, 1893. 



