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Pakistan | Family List | Boraginaceae | Eritrichium

2. Eritrichium canum (Benth. in Royle) Kitamura in Act. Phytotax. Geobot. 19:103. 1963. Riedl in Rech. f., Fl. Iran. 48:64.1967; Kazmi, l.c. 390.


Perennial. Stems erect-decumbent, 25-40 cm tall, appressed hairy. Leaves both surfaces with sparse to densely appressed hairs; basal leaves petiolate; cauline and upper leaves sessile, petiolate, smaller, obtuse to acute. Inflorescence simple or branched. Bracts linear. Pedicel in fruit ± erect, pubescent. Calyx lobes c. 1 mm long, ovate, upto twice in size in fruit, pubescent. Corolla blue with yellow, lobes suborbicular, apex of throat appendages minutely pubescent or not. Nutlets 1.5-2.5 x c. 1.5 mm, surface flat to slightly concave or convex, pubescent. Margin of appendages usually irregular, 0.2-1 mm. long, united at base or not, apex glochidiate.

A polymorphic species represented in Pakistan by 4 varieties, which previously according to some authors (e.g. Kazmi, l.c.) were considered as distinct species. The characters mentioned by Kazmi (l.c.) to key-out the species show overlapping and are not clear-cut. In the present treatment a broad view is taken to include Eritrichium fruitculosum, Eritrichium patens, Eritrichium strictum and Eritrichium spathulatum. Due to ready hybridisation in the taxa involved, the characters are ill-defined. As nutlet characters are important diagnostically, fruiting material is essential.

1 Appendages of nutlets c. 1 mm long. Irregular, united at the base   2 Eritrichium canum var. canum
+ Appendages of nutlets 0.2-0.6 mm long, generally of same size, not united at the base   (2)
2 (1) Cauline leaves subsessile and gradually narrowed towards base   2 Eritrichium canum var. fruticulosum
+ Cauline leaves sessile, not narrowed towards base   (3)
3 (2) Stems erect. Cauline leaves with densely appressed hairs only. Nutlets 1.5 x 1 mm, outer face minutely rugose to pubescent; appendages c. 0.2 mm long   2 Eritrichium canum var. patens
+ Stems weak, decumbent. Cauline leaves narrow oblong to oblong-ovate, hairs unequal, some suberect. Arising from a tuberculate base. Nutlets 2-2.5 x 1.5 mm, outer face pubescent; appendages 0.5-0.6 mm long   2 Eritrichium canum var. spathulatum

Lower Taxa

Related Synonym(s):


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