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GENUS 152. TETRAPLOA B and Br.* 
Spores mostly quadriarticulate, growing together in fours and 
each crowned with a jointed bristle. 
1,—Tetraploa aristata B and Br, A.N.H., No. 457, with a figure 
on grass, Batheaston. The only species. 
GENUS 153. ECHINOBOTRYUM Cda.t 
Parasitical. Spores unicellular, stellato-fasciculate, ovato- 
acuminate, rough. 
1.—Echinobotryum atrum Cda. Icones IIL, fig. 6. On moulds 
Batheaston. The only species. 
GENUS 154. GyMNosPoRrIUM Cda.t Icones IL, fig. I. 
Mycelium very obscure. Spores unicellular, arising apparently 
from the matrix. The only British species G. arundinis Cada. 
has not been met with here. 
ORDER 15, PUCCINIE!. P. 
Parasitic on living plants. Peridium none. Spores. Producing 
on germination secondary spores. 
GENUS 155. XENODOCHUS. SCHLECHT.§ 
Spores multiseptate, moniliform, breaking up into many dis- 
tinct articulations. 
Xenodochus carbonarius Schlecht the only species, has not 
occurred in the district, it is parastic on Uredo miniata or a con- 
dition of it. 
GENUS 156. TRIPHRAGMIUM. Jik.|| 
Spores trilocular ; septa mostly vertical and horizontal. 
1.—Triphragmium ulmarie Zk. On Spirea ulmaria, near Bristol. 
The only British species. 
+ Tetraploa, from tettara, four, and ploion a ship or boat. 
+ Echinobotryum, from echinus, a hedgehog. and botrys, a cluster of grapes. 
+ Gymnosporium, from gymnos naked, and sporos. 
§ Xenodochus, from xenodokeia, the reception of strangers. 
\| Triphragminm, from tris, thrice, and phragma, a wall or division. 
