From a book by Tanigami Konan (1879–1928). See discussion.
The word this week for those who want to practice their calligraphy is katorea (cattleya), written in katakana.
Here is a relatively simple sketch of a cattleya orchid for practice.
Senbyō-hō means line strokes or outlining. Mokkotsu-hō or "boneless" strokes are used to add color inside the lines. The two techniques used together is called kōrokutensai-hō.