1. Achillea wilhelmsii C. Koch, Linnaea. 24: 328. 1851; Hub.-Mor. in P.H.Davis, l. c.. 32. 1975; in Rech. f., l. c. 53. t. 54. 1986; Mouterde, Nouv. Fl. du Lib. et Syr. 3: 399. Pl. CCCVII, n. 2. 1984; S.M.Goodman & Ghafoor in Fieldiana:Botany New Ser. 31: 46. 1992; Afan. in Schischk. & Bobrov, Fl. USSR 26: 95. 2000 (Engl. transl.).
Vern.: Boi Madran (Brahui; Kalat, Mach region), Zawal (Pushtu; Zhob & Chaman area).
A. santolina non L.: auct. plur. Stewart, Ann. Cat. Vasc. Pl. W. Pak. & Kashm. 711.1972.
Erect to ascending, up to 35 cm tall, basally ± woody perennial shrublet with ± patent, whitish to grayish-white hairy, longitudinally striate internodes. Leaves lanate to glabrescent, cauline nearly equal to each other in size, densely borne, uppermost reaching corymb, linear, 1.5 – 2.5 (-3) x 1 – 2 cm, primary lobes 3-parted into narrowly orbiculate ultimate, c. 1 mm long segments. Capitula on 1 – 4 mm long peduncles, up to c. 40, borne in compact, 2 – 4 cm broad corymbs. Involucre ± angular, ± obovate-oblong, phyllaries lanceolate to oblong, 2 – 2.5 mm long, appressed hairy, narrowly membranous margined, acute, carinate, outer with brownish apices, persistent. Receptacle flat. Paleae lanceolate, slightly shorter than the disc-corollas, thin, membranous, appressed hairy in upper part, ±obtuse. Ray-florets 3 – 5, with yellow, 3-lobed, suborbiculate, c. 1.25 mm long ligules. Disc-florets 15 – 25, with 2 – 2.5 mm long corolla tube. Cypselas oblong to wedge-shaped, c. 1 mm long, light brown, glabrous.
Fl. Per.: April – June.
Syntypes: Transcaucasia, Wilhelms; Ibid, K.Schmidt (B).
Distribution: Turkey, Caucasus, Syria, Iraq, Iran, Central Asia, Afghanistan, and Pakistan.
The plant, especially flowers and fruits, are used in diarrhoea to check dehydration and also in jaundice (kawal) in Balochistan. It is diuretic and useful in fever, nasal congestion and stomach ailments.