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POTENTILLA H^MATOCHROUS. 



of the usual size, divisions of the calyx ovate, acuminate, 3 to 4 lines long, alternating with the 

 bracteolae, beneath which they are much narrower and smaller. Petals longer than the calyx, and 

 of a brownish-red colour. Receptacle covered with white hairs. Fruit ovoid, somewhat com- 

 pressed, and marked with an elevated line on the dorsal side ; on the ventral side it is almost 

 keeled, somewhat obtuse under the apex, and slightly notched. 



This very distinct herbaceous species is a native of Mexico, where it was found 

 by Scheide and Ehrenberg. Our drawing was made from a fine plant now growing 

 in the gardens of the Birmingham Botanical and Horticultural Society, to which 

 establishment it was presented by the curator of the Berlin Garden, in the year 

 1838. It will probably require frame protection during the winter : at least, so 

 it has been treated in the Birmingham garden, with great advantage. It is, 

 therefore, evident, that it would soon become perfectly hardy, though at present 

 the plants are much too scarce to risk many of them in the experiment. One, 

 however, was turned out into the open border in May, where it is now growing 

 about two feet high. It flowers in July and August, and may be increased by 

 divisions, or by seeds. The soil should be loam and peat. 



The generic name, from potens " powerful," has been adopted in consequence 

 of the powerful virtues supposed to be contained in the tribe. The specific name 

 hcematochrous, is derived from eujua— ros, " blood," and xpoa, " colour." 



