. Contributions from the Botanical Laboratory, vol. 11. Botany; Botany. Krprinfcfl frmn Ttie AMERirAN ()Rnnr» ;, Juno, HKU ^ f\ n Native Orchids Our Eastern Orchids and Their Cultivation'^ 6. The Crested Orchids Edgar T. Wherry Sweet Crest-Orchid. P o g onia ophioglossoidcs (L.) Ker. The majority of the crested Or- chids occupy the most intensely acid soils normally occurrin<^ in nature. This one, which is sometimes termed Rose Po^onia or **Snake-mouth," —-an unlovely name for a lovely flower—occurs in ])ractically every extensive si)ha^num bo^ and acid meadow
. Contributions from the Botanical Laboratory, vol. 11. Botany; Botany. Krprinfcfl frmn Ttie AMERirAN ()Rnnr» ;, Juno, HKU ^ f\ n Native Orchids Our Eastern Orchids and Their Cultivation'^ 6. The Crested Orchids Edgar T. Wherry Sweet Crest-Orchid. P o g onia ophioglossoidcs (L.) Ker. The majority of the crested Or- chids occupy the most intensely acid soils normally occurrin<^ in nature. This one, which is sometimes termed Rose Po^onia or **Snake-mouth," —-an unlovely name for a lovely flower—occurs in ])ractically every extensive si)ha^num bo^ and acid meadow in the eastern United States and Canada. Its rootstocks creep through the moist peat and form extensive colonies, and when it is in full bloom in June its deliaate perfume fills the air. A recent book on wild flower cultivation includes it among species which are said to "move easily and safely to any good moist garden spot," but this is quite misleading. A good garden spot is rich in plant foods and neutral in reaction, and the plant will succumb there within a year or two. There is no use trying to grow it at all except in an extensive bed of strongly acid humus, with a con- stant supply of water free from lime. Rosebud Orchh), Pogonia (Clcisfcs) dlvaricata (L.) R. Br. Though like the preceding species this Orchid requires acid soil, it prefers less water and more air at its roots, occurring in meadows which are at most temporarily inundated, on hummocks around bog margins, and even on dry mountain sides. Its ancestral home was apparently in the Allegheny mountain region, and it is still to be found there, as far. ?Contribution from the Botanical Eahoratory and Morris Arboretum nf tlie University of Pennsylvania. lidijiir T. iriicny Pogonia (Clcisfcs) divaricaia Delaware, early July, 1*^26 north as west-central Virginia. When the ocean withdrew during the Tertiary geological period, leav- ing a vast expense of sediments avail- able for occupancy by land ])lants
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