Welwitschia.] oOXXvIII. GNETACHa (Pearson). 333 
extending round half the raised rim of the hypocotyl, oblong, entire, 
usually in old plants torn into few or many strap-like segments 
from apex to base, thick, leathery with the main nerves parallel and 
distinct, growing at the base as long as the plant lives, dying at the 
apex, up to 4 yards long. Spikes arranged in compound dichasial 
cymes (rarely solitary) arising annually from pits in the floriferous 
cushions situated immediately above, not seldom immediately 
beneath each leaf. Male spike bearing 40-70 axillary flowers in 4 
rows ; bracts connate, lowest pair or 2 pairs barren; florets con- 
cealed by the bracts until the exsertion of the anthers. Female 
spike bearing 40-60 florets in 4 rows; lowest 6-10 pairs of bracts 
increasing in size from below upwards, barren, the lowest 2 or 3 
pairs connate; except the micropylar tube, the seed completely 
concealed by the bract at maturity.—-Zwmboa, Welw. ex Hook. 
in Gard. Chron. 1861, 75. 
* Species 1, in the South West African Coast belt. 
1. W. mirabilis, Hook. f. in Trans. Linn. Soc. xxiv. 1, tt. 1-14. 
Characters as for the genus. —Bot. Mag. tt. 5368-9 ; Monteiro, Angola 
and Riv. Congo, ii. 228-231, t. 15; Naudin in Gard. Chron. 1882, 
xvil. 14, fig. 3; Hichl. in Engl. & Prantl, Pflanzenfam. ii. i. 123, 
figs. 79-82; Giirich in Mitteil. Geogr. Gesellsch., Hamburg, 
1891-2, 166; Baum, Kunene-Samb. Exped. 450, frontispiece and 
figs. 2-3; Kew Bulletin, 1907, 360, 412, t. 2, figs. 2-3; Pearson in 
Nature, 1907, Ixxv. 536, figs. 1-3, in Geogr. Journ. 1910, xxxv. 494, 
with figs. and in Gard. Chron. 1910, xlvii. 49, suppl. illustration, 
Jan. 22; Henriques in Gard. Chron. 1910, xlvii. 210, fig. 90; 
Marloth, The Flora of South Africa, Pl. 21; Church in Phil. Trans. 
(B), cev. (1914), 115 (with figures). T’umboa Bainestr, Hook. f. in 
Gard. Chron. 1861, 1008; Engl. in Engl. & Prantl, Pflanzenfam. 
Nachtr. i. zu ii.-iv. 27, and in Pflanzenwelt Afr. ii. 90-93, fig. 85. 
Lower Guinea. Angola: Mossamedes District; Cabro Negro, Welwitsch, 
and without precise locality, Mrs. Monteiro. Damaraland: Welwitsch, Galpin 
& Pearson, 7470! 7476! and without precise locality, Baines! Swakop 
River, near Walfish Bay, Cleverly in MacOwan Herb. Austr.-Afr. 17251 Hai- 
kamchab, Galpin & Pearson, 7440! 7441! 
Mrs. Monteiro’s specimens are labelled “ Loanda.” The river San Nicolau 
which Monteiro regarded as the northern limit of Welwitschia is about 300 miles 
south of Loanda. The species certainly does not occur in the Loanda district. 
Orper CXXIX. PINACEZ:. 
(By O. Srapr.) 
Dicecious or moncecious. Male cones mostly catkin-like, terminal 
or axillary, simple and usually solitary, rarely spicate or lanceolate, 
bracteate or ebracteate at the base; scales bearing, basi-dorsally 
