. A popular description of the common Oregon ferns; contribution from the Herbarium of the University of Oregon. SQ. THE COMMON OREGON FERNS 11 OPHIOGLOSSUM. Adder Tongue. Sporangia naked and borne in a simple or compound spike, whenripe opening by a transverse slit. The sterile frond simple. (The scientific name is composed of two Greek words, snake andtongue, referring to the simple spike of sporangia.) Ophioglossum vulgatum L. Found in Washington and Californiabut not as yet reported in Oregon. Probably present. BOTRYCHXUM. Grape Fern. Moonwort. Sporangia same as in ophioglossum but the ste
. A popular description of the common Oregon ferns; contribution from the Herbarium of the University of Oregon. SQ. THE COMMON OREGON FERNS 11 OPHIOGLOSSUM. Adder Tongue. Sporangia naked and borne in a simple or compound spike, whenripe opening by a transverse slit. The sterile frond simple. (The scientific name is composed of two Greek words, snake andtongue, referring to the simple spike of sporangia.) Ophioglossum vulgatum L. Found in Washington and Californiabut not as yet reported in Oregon. Probably present. BOTRYCHXUM. Grape Fern. Moonwort. Sporangia same as in ophioglossum but the sterile frond dividedor compound. (From a Greek word meaning grapes, because of grape-like clus-ter of sporangia.) Sterile and fertile frond distinct from the base. Common inmarshes and wet ground. B. silaifolium Presl. Sterile and fertile frond united for a considerable distance. Asyet only reported from high altitudes in Eastern Oregon. B. virginianum (L.) Swartz. STRUTHIOPTERIS. Ostrich Fern. Deer Fern. Fronds of two kinds but the fertile evidently composed of con-tracted pinnules with typical sporangia on the
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