88 GUIDE TO THE STUDY OF LICHENS. 



forms it, however, becomes almost foliose. The name 

 Bceomyces meaus a " small fungus," or " toadstool." 

 The light color of the stipes and apothecia do give it a 

 marked resemblance to the fungi of the mushroom or 

 toadstool order. The stipes are never branching, and 

 are almost entirely wanting in one species. The apo- 

 thecia are well developed and vary from globose to dis- 

 tinctly flattened. The algae are light-green, single- 

 celled, belonging to Protococcus. A Glceocapsa also 

 occurs with some species (^B. roseus). Spores are col- 

 orless, spindle-shaped to almost acicular, simple or 

 very indistinctly septate. 



None of the species have been credited with any 

 special virtues. 



The collector will meet with these plants in forest 

 lands, where they occur in patches, usually several feet 

 (sometimes less) in diameter. B. roseus is most com- 

 mon, and is characterized by a greenish-gray crustose 

 thallus, which is in marked contrast with the soil. 

 Care is necessary to preserve the specimen. Place the 

 lichens, attached to a considerable portion of the soil, 

 in a suitable pasteboard box, or wrap carefully in pa- 

 per. They had best be kept in paper pockets or in 

 small pasteboard boxes, as indicated. 



1. Bceomyces roseus. Thallus granulose, greenish. 

 Stipes comparatively long, white or a faint rosy tint. 

 Apothecia, spherical (both stipe and apothecium col- 

 lapse on drying). Disk a rosy tint. Spores in long 

 slender sacs, acicular, usually slightly curved, some- 

 times faintly septate, colorless, 25.5/a X 3.5/i. 



