Capt. Clark, May 29, 1806--The Choke Cherry has been in blume since the 20th inst. it is a simple branching ascending stem. the cortex smooth and of a dark brown with a redish cast. the leaf is scattered petiolate oval accute at it's apex finely serated smooth and of an ordinary green, from 2 ½ to 3 inches in length and from 1 3/4 to 2 in width. the peduncles cilindric and common from 4 to 5 inches in length and are inserted promiscuisly on the twigs of the proceeding years growth. on the lower portion of the common peduncle are frequently from 3 to 4 small leaves, being the same in form as those last discribed. other peduncles 1/4 of an inch in length are scattered and thickly inserted on all sides of the common peduncle at right-angles with it, each elivateing a single flower, which has five obtuse short patent white petals with short claws incerted on the upper edge of the calyx. the calyx is a perianth including both stemes & germ, one leafed five cleft entire, semi globular. the stamons are upwards of twenty and are seated on the margin of the flower cup or what I have called the perianth. the filaments are unequal in length subulate inflected and superior membranous. the anthers are equal in number with the filaments, they are very short oblong and flat, naked and situated at the extremity of the filaments. is of a yellowish colour asis also the pollen. one pistillum. the germin is ovate, smooth, superior, sessile, very small; the style is very short, simple, erect, on the top of the germen deciduous. the stigma is simple, flat very short. This shrub rises to the hight of from 6 to 8 feet generally but sometimes [in] rich situations much higher. it is not confined to any particular situation.