Photo and text by Bob Stewart
D. strigosus is easy growing, upright, can easily become a few feet tall, and the leaves can be 8" (20 cm) long. The flowers are yellow, with a 'Chinese lantern" calyx that can be reddish to white, depending on light. The species produces seed easily, the fruit is orange. It is readily available, and a good starter Drymonia. Other clones of the species have longer calyces of a paler color, as in this beautiful photo from Leslie Brothers.
Other examples of Drymonias with colorful calyces are D. coriaceae and D. semicordata. A photo of a stem illustrates the general habit of D. strigosa.