510 BOTANY. 



Epigma repens, the Mayflower or Trailing Arbutus, ia a low trailing 

 plant with a woody stem, found chiefly in New England and adjacent 

 rejrions. Its rose-colored fraftrant flowers, which appear in early 

 spring, are much sought for. 



Mrica. This large genus, including 400 or more species, is distrib- 

 uted in Europe, Northern Asia, and Northern and Southern Africa, 

 reaching its maximum in the latter region. None are found in 

 America. Many species are grown in conservatories. 



Oaultheria procumbena, Wintergreen or Checkerberry, has aromatic 

 fruit and foliage. From the latter an officinal oil is distilled. 



Kalmia. A jjenus of beautiful plants with curious flowers ; each 

 stamen when the flower opens is bent backward, and its antber is 

 hidden in a sac in the corolla ; somewhat later the authers escape from 

 the sacs and the pollen is ejected. This mechanism has probably to 

 do with the process of cross-fertilization through the agency of insects. 

 Some of our native species are reputed to be poisonous to domestic 

 animals, e.g., K. angustifoUa, the Sheep Laurel or Lambkill. 



Rhododendron. This genus is now made to include the Azaleas as 

 well as the true Rhododendrons. Some species become larire trees (ij. 

 arboreum of the Himalayas), while many are highly prized as orna- 

 mental shrub?. The Great Laurel (R. maximum), a. shrub or small tree, 

 with large evergreen leathery leaves, grows in the Alleghany Moun- 

 tains. R. Oatawbiense and its hybrids with R. arboreum are extensive- 

 ly planted for ornaments. R. Indica is the Azalea of the florists ; it 

 has many varieties. 



Sub- Order JEpaeridecB, — About 3S0 species of shrubs or small 

 trees, often with a Heath-like appearance ; natives of Australia and 

 many of the Pacific islands ; only one species is found in South Amer- 

 ica. Many species are grown in conservatories, e.g., Epacris, Leucopo- 

 gon, DracopTik/llum, etc. 



Sub-Order FyrolinciB. — Perennial herbs, about twenty species, 

 all of the North Temperate Zone. They are of but little account 

 economically or otherwise. Ohimaphila maculata, Pipsissewa or 

 Prince's Pine, was used by the Indians as a medicine. The dried 

 leaves constitute the ofiicinal drug Chimaphila. 



The anomalous genus ( 'lethra, including twenty-five species of shrubs 

 and trees (American and Asiatic) is sometimes placed in this sub-order 

 on account of its choripetalous corolla; it appears, however, to prop- 

 erly fall into the Ericineae, in either the tribe Andromedese or Rho- 

 doresB. 



Sub-Order Monotropece. — Small herbs, parasitic or sapro- 

 phytic, destitute of chlorophyll ; their leaves are iedu<-ed to mere 

 bracts, and their flowers and seeds show still further degradation. Ten 

 or twelve species are known, distributed throughout the temperate 

 parts of the Northern Hemisphere. 



