Descriptive Flora 



149 



which distinguish this species from M. serrulata or M. melano- 

 glottis. 



Meriolix melanoglottis Rydb. Easter Flower. 



Similar to Meriolix serrulata but having its stigma and in- 

 side of the cup or only the latter stained with brownish-purple 

 or black. One of our most attractive flowers of the rocky hill- 

 tops, hillsides and ledges. April to July. Common name given 

 through the black centers being used as dye for Easter eggs. 



Gnlpinsia tubioula (A. Gray) Small. Dwarf Evening Primrose. 

 {Oenothera tubicula A. Gray.) 



Similar to Meriolix serrulata but not as tall (4 to 10" high) 

 and more branched. Leaves y 2 to 1" long. The 8 stamens are 

 equal in length. Stigma entire, never slightly 4-toothed. Cap- 

 sules less than long. In sand to the south and east. March 

 to June. 



Hartmannia speciosa (Nutt.) Small. 



White or Pink Evening Primrose. "Primula". 

 Large, wide-open delicate flowers, 2 to 3 inches across, with 

 4 pure white varying to deep pink, diaphanous petals shading: 

 into greenish-yellow at base. Stamens 8, with long, white fila- 

 ments and yellow anthers containing pollen held together by cob- 

 webby threads. Style long, threadlike, terminating in a long^ 

 4-lobed stigma. Young buds nodding, becoming erect with age. 

 Fruit club-shaped, less than y 2 " long, 4-winged, in the axils of 

 the upper leaves. Leaves simple, alternate. Blades 2 to 4 inches 

 long, variously cut along the margin into narrow lobes. Plants 

 usually branch at the root and form large patches of strikingly 

 conspicuous white or pink blossoms. These flowers open in the 

 evening but differ from most of the evening primrose family in 

 that the blossoms remain open all day even in the full sun. This 

 and other species are often cultivated as "Mexican primrose". 



Hartmannia tetmptera (Cav.) Small. Pink Evening Primrose. 

 Similar to Hartmannia speciosa in habit and general appear- 



