. Contributions from the Botanical Laboratory, vol. 11. Botany; Botany. likely to result in invasion by fun^i and death of the ])lant, so personal collection of it is ])referable to pur- chase from dealers. There is, how- ever, little use tryinf>- to cultivate it unless stron^^ly acid sandy peat soil is available, and the area is free from i)arasitic funi>i, slu.^-s and cut- worms. Purple Fivk-lkaf Orchid. Fogonia (Isotria) verticiUata (Willd.) Nutt. The root system of this species, like that of the Sweet Crest-Orchixl, consists of an extensive series of rootstocks, by which it spreads i


. Contributions from the Botanical Laboratory, vol. 11. Botany; Botany. likely to result in invasion by fun^i and death of the ])lant, so personal collection of it is ])referable to pur- chase from dealers. There is, how- ever, little use tryinf>- to cultivate it unless stron^^ly acid sandy peat soil is available, and the area is free from i)arasitic funi>i, slu.^-s and cut- worms. Purple Fivk-lkaf Orchid. Fogonia (Isotria) verticiUata (Willd.) Nutt. The root system of this species, like that of the Sweet Crest-Orchixl, consists of an extensive series of rootstocks, by which it spreads into lari>"e colonies. Its favored habitat, however, is dry upland peat under ])ine or oak trees. It occurs prac- tically throu<^hout the eastern states, althoug'h becoming rare northward. Attem])ts to cultivate it are rarely successful, owin" to the difficulty of keepino- the soil sufficiently acid, and of preventing fungi from over- whelming Ed (far T. Wherry Pogonhi (Isotria) affinis Virginia, late ^^ay, 1923 Green Five-leaf Orchid, Fogonia (Iwtria) affinis Austin. This species has been collected at only a very few localities from North Carolina to Maine, but is probably more common than sup- posed, and is overlooked. For it has one of the longest resting pe- riods of any of our eastern Orchids, during which it remains dormant underground and sends up no leaves or flowering stalk at all. Woods where it has occurred in abundance in one favorable season have been watched for at least ten years with- out its reappearing, and no one can tell how much longer a wait will be necessary. Unlike its relative, just discussed, it does not spread by rootstocks, the crown being sur- rounded by a group of long radiat- ing slightly fleshy roots. There is no record of its successful cultiva- tion. Grass-pink Orchid, Calopogon pul- chcUiis (Sw.) , or Limodorum tuberosnin L. In earlv summer many moist grassy i)inelands throughout the eastern United States and Canada are


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