e tuft of short green hairs at the ends. _Abassi_, a variety
comparatively recently obtained by selection. The lint is pure white,
very fine and silky, but not so strong as Mitafifi cotton. _Yannovitch_,
a variety known since about 1897, yields the finest and most silky lint
of the white Egyptian cottons. _Bamia_, yielding a brown lint, very
similar to Mitafifi, but slightly less valuable. _Ashmouni_, a variety
principally cultivated in Upper Egypt. The lint is brown and generally
resembles Mitafifi but is less valuable.

Other varieties are _Zifiri_, _Hamouli_ and _Gallini_, all of minor
importance.

2. _G. brasiliense_, Macf. (_G. peruvianum_, Engler), or kidney cotton.
Amongst the varieties of cotton which are derived from this species
appear to be Pernambuco, Maranham, Ceara, Aracaty and Maceio cottons.
The fibre is generally white, somewhat harsh and wiry, and especially
adapted for mixing with wool. The staple varies in length from 1 to
about 1-1/2 in.

3. _G. hirsutum_, Linn. Although _G. barbadense_ yields the most
valuable cotton, _G. hirsutum_ is the most important cotton-yielding
plant, being the source of American cotton, i.e. Upland, Georgia, New
Orleans and Texas varieties. The staple varies usually in length between
3/4 and 1-1/4 in. According to Watt there are many hybrids in American
cottons between _G. hirsutum_ and _G. mexicanum_.

4. _G. herbaceum_, Linn. Levant cotton is derived from this species. The
majority of the races of cotton cultivated in India are often referred
to this species, which is closely allied to _G. hirsutum_ and has been
regarded as identical with it. Amongst the cottons of this source are
Hinganghat, Tinnevelly, Dharwar, Broach, Amraoti (Oomras or
Oomrawattee), Kumta, Westerns, Dholera, Verawal, Bengals, Sind and
Bhaunagar. Watt dissents from this view and classes these Indian cottons
as _G. obtusifolium_ and _G. Nanking_ with their varieties. The Indian
cottons are usually of short staple (about 3/4 in.), but are probably
capable of improvement.

5. _G. arboreum_, Linn. This species is often considered as indigenous
to India, but Dr Engler has pointed out that it is found wild in Upper
Guinea, Abyssinia, Senegal, etc. It is the "tree cotton" of India and
Africa, being typically a large shrub or small tree. The fibre is fine
and silky, of about an inch in length. In India it is known as Nurma or
Deo cotton, and is usually stated to be employed for making thread for
the t