Clarkia pulchella. - Beautiful Clarkia. - This is a hardy annual, of great beauty, discovered by Captain Clark, in his expedition, with Captain Lewis, to the Columbia River. It is a native of the Rocky Mountains.
Plants from seed sown in August or September flower much stronger than when sown in the spring, but succeed very well when planted in April or early in May. The soil should not be over rich or moist, as they frequently die very suddenly in such a location. In a good, sound loam, rather light, it flourishes best. The flowers are light-purple; plants one foot high; in bloom from June to September.
There is a variety with pure white flowers. All the varieties and species, when grown in large masses, are very ornamental.
C. elegans, - Elegant Clarkia, - and its varieties, are also hardy annuals, of great beauty, requiring the same treatment as C. pulchella; from one foot to eighteen inches high; in flower at the same time.
C. rhomboidea. - Entire-petalled. - Synonym. C. gau-roides. - It is an annual, growing about two feet high. The flowers are an inch across, purple and white near the bottom of each petal, spotted with purple. It much more resembles C. elegans than C. pulchella. Mr. Douglas has left some remarks on another species in California, closely allied to C rhomboidea, viz., C. unguicidata.