Gymnosporangium clavipes Cooke & Peck 1873

Gymnosporangium germinale (Schw.) Kern, Bull. Torrey
Club 35: 506. 1908.
Caeoma ( Pertdermium) germinale Schw. Trans. Am. Phil. Soc. II. 4 : 294. 1832.
Peridermium {Caeoma) germinale Schw. Trans. Am. Phil. Soc. 11. 4: 310. 1832.
Podisoma Gymnosporangium clavipes Cooke & Peck; Cooke, Jour. Quek. Club 2 : 267. 1871.
Gymnosporangium, clavipes Cooke & Peck; Peck, Ann. Rep. N. Y. State Mus. 25: 89. 1873.
Roestelia auraniiaca Peck, Bull. Buffalo Soc. Nat. Sci. 1 : 68. 1873.
Puccinia clavipes Kuntze, Rev. Gen. 3^ : 507. 1898.
Tremella clavipes Arth. Proc. Ind. Acad. Sci. 1900 : 135. 1901.
Aecidium aurantiacum Farl. Bibl. Index 1 : 19. 1905. Not A. aurantiacum, Bon. 1860.
Aecidium germinale Arth. Result. Sci. Congr. Bot. Vienne 343. 1906.
Pycnia chiefiy fructicolous, gregarious, in irregular groups on slightiy hypertrophied areas occupying part or all of the surface, prominent, conspicuous, honey-yellow becoming blackish, slightly flattened-globose, large, 160-270 ^ in diameter by 150-230 // high ; ostiolar
filaments 90-150// long.
1. Aecia fructicolous and caulicolous, crowded on hypertrophied areas of variable size on the twigs and peduncles, occupying part or usually all of the surface on the fruits, cylindric, 1.5-3 mm. high by 0.3-0.5 mm. in diameter ; peridium whitish, becoming coarsely lacerate sometimes to base, erect or spreading ; peridial cells seen in both face and side views, not hygroscopic, remaining straight when wet, polygonal-ovate or polygonal -oblong in face view, 19-39 by 45-95 /i, rhomboidal in side view, 25-40^ thick, the outer wall moderately thick, 3-5 fi, smooth, the inner wall very thick, 13-23 /i, coarsely verrucose with rather loosely set, large, very irregularly branched papillae, the side walls verrucose on the inner half similar to the inner wall ; aeciospores globoid, large, 21-32 by 24-39 /z; wall pale-yellow, thick, 3-4.5^, rather coarsely verrucose with crowded, slightly irregular papillae, sometimes appearing reticulate, the pores 6-10, scattered, very obscure.
On Malaceae : . ^ „ , . . ^^ v ^ x^ ti^ -
Amelanchier canadensis (L.) Medic. {A. Botryaptum DC), Connecticut, Maine, New
York ; Newfoundland; Ontario, Quebec. Amelanchier erecta Blanchard, Michigan. . ^^ ^ ,. . ,^ t. .^
Amelanchier intermedia Spach {A. Boiryaptum Hook, not DC), Maine, Massachusetts,
Michigan, New York; New Brunswick. Amelanchier oligocarpa (Michx.) Roem., Quebec.
Amelanchier oblongifolia (T. & G.) Roem., Maine, Massachusetts, Michigan, Wisconsin. Amelanchier rotundifolia (Michx.) Roem., Ontario. Aronia arbutifolia (L,) KH., Maine, Massachusetts ; New Brunswick.
Aroma atropurpurea'^r:^ou,yi^ ^. , a .-^ /■ ^ tvt ■
Aronia nwnsirosa Zabel {Sorbus amertcana x Aroma arbutifoha), Maine.
Aronia nigra (Willd.) Britton, Maine ; Ontario. .
Choenomeles japonica (Thunb.) Lindl. {Cydoma japomca Pers.), New Jersey.
Crataegus colojiica Beadle, South CaroHna. . ,, ^ , ,^ -,.4.^ t*t• •^«-
Craiafgus Crus-galli L., Connecticut, Georgia, Kentucky, Massachusetts, Mississippi, North Carolina, Ohio, Pennsylvania, Virginia. Crataegus dispar Beadle, Soutli Carolina.
Crataegus flava Ait., Alabama, Florida, Soutli Carolina.
Crataegus Jonesae Sq-t^., Maine.
Crataegus mollis (T. & G.) Scheele, Illinois, Indiana.
Crataegus Phaenopyrum (I,, f.) Medic. (C cordata Ait.), Tennessee.
Crataegus punctata Jacq., New York, North Carolina; Ontario.
Crataegus Reverchoni Sarg^., Texas.
Crataegus rotundifolia Moench, Maine. New York.
Crataegus spathulata Michx., Alabama, North Carolina, South Carolina, Tennessee.
Crataegus sp., Arkansas, Louisiana, New Jersey. "
Cydonia vulgaris (L.) Pers. {Pyrus vulgaris L-), Alabama, Connecticut, Delaware, Maine,
Maryland, Massachusetts, Michigan, Mississippi, New York, Vermont. Malus Malus (L-) Britton {Pyrus Malus L-). Massachusetts.
Telia caulicolous, from a perennial mycelium, appearing on slight fusiform swellings, usually aggregated, roundish, 1-4 mm. across, often confluent, hemispherical, 1-3 mm. high, orange-brown ; teliospores 2-celled, ellipsoid, 18-26 by 35-51 m, roundish or somewhat acutish *above, obtuse below, slightly or not constricted at the septum ; wall yellowish, thin, 1-2 ;Lt, slightly thicker at apex, 2-3 ju, the pores 1 in each cell, apical in the upper, near the pedicel in the lower cell ; pedicels carotiform, 9-19 ju in diameter near the spore, very long.
On Juniperaceae :
Juniperus communis L-, Maine, Massachusetts.
Juniperus sibirica Burgsd. {J. nana Willd.), Illinois, Michigan, New York, Wisconsin.
Juniperus virginiana L{Sabina virginiana Ant.), Alabama, Connecticut, Delaware, District of Columbia, Iowa, Kentucky, Maryland, Massachusetts, Mississippi, New Jersey, New York, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, Virginia.
Type locality : Philadelphia, Pennsylvania, " in germinibus Rosae," error for Crataegus sp.
Distribution : From Maine west to northern peninsula of Michigan and to Iowa, south to Texas and northern Florida.

Gymnosporangium clavipes is a plant pathogen, a fungus that causes cedar-quince rust. Similar to Gymnosporangium juniperi-virginianae and Gymnosporangium globosum, the fungus infects a wide range of Rosaceae, such as apple, hawthorn and quince trees, and also requires an evergreen host such as eastern red cedar or a number of other juniper species to complete its life cycle.

Gymnosporangium clavipes je grzib, co go ôpisoł Cooke & Peck 1873. Gymnosporangium clavipes nŏleży do zorty Gymnosporangium i familije Pucciniaceae. Żŏdne podgatōnki niy sōm wymianowane we Catalogue of Life.