FLORA OF ADEN. 
£93 
1. Lavandula setifera Anders. Journ. Linn. Soc. V, Suppl. p. £9; 
Defl. Bull. Soc. Bot. France XXXII, 352. 
Description : — Subherbaceous, \ — 1 foot high, glabrous. Stems vir- 
gate, erect, 6 -costate-striate, subtetragonous, subaphyllous, with white 
pilose reflexed hairs, at last glabrous. Leaves oblong, attenuate into the 
petiole, entire rotundate or pinnatisect, slightly viscid, hairy. 
Spikes 1 — inches long, ovate or slightly elongate, solitary, simple, 
terminal, dense, long-peduncled. Bracts alternate, 1 -flowered, membra- 
nous, dilate at the base, long-setaceous, the lowest as long as the calyx or 
shorter, the uppermost almost twice as long as the calyx. Calyx oblong- 
cylindric, 2 lines long, 15-nerved, velutinous ; teeth 5, almost equal, 
triangular, ciliate and shortly barbed at the apex, very short. Corolla 
velutinous, violet. 
Flowers: — Dec. 1888 (Schweinf.), Dec. 1889 (Defl.), March to 
April (Defl.). 
Fruits: — January 1880 (Balfour), February 1851 (Thomson), Dec. 
1888 (Schweinf.), Dec. 1889 (Defl.). 
Locality : — Plain of Maala on debris at the foot of the Shum Shum 
Range (Defl.) ; slope of Shum Shum Range (Ellenbeck) ; without 
locality (Hook., Birdw., Beevor, Balfour). 
Distribution : — Yemen. 
XL. — N V CTA GIN A CEiE. 
Herbs, shrubs or trees. Leaves usually opposite, entire; stipules 0. 
Flowers in terminal or axillary cymes, panicles or corymbs ; bracts 
often forming a brightly coloured involucre. Flowers hermaphrodite, 
rarely unisexual, regular, sometimes dimorphous. Perianth monophyl- 
lous, small, herbaceous or petaloid, persistent, often accrescent ; tube 
short or long, sometimes circumscissile above the base ; limb 3 — 5-toothed 
or lobed, persistent or deciduous ; the lobes plicate in bud. Stamens 
1 — 30, hypogynous, sometimes unilateral ; filaments small, usually un- 
equal, free or connate into a cup at the base, involute in bud ; anthers 
2- celled, dorsifixed, included or exserted, dehiscing longitudinally. 
Ovary 1-celled ; ovule solitary, erect, campylotropous ; style filiform, 
involute in bud ; stigma small, simple or multifid. 
Fruit membranous, indehiscent, enclosed in the persistent base of 
the perianth -tube, costate, sulcate, or winged, sometimes glandular. 
Seed erect ; testa adherent ; albumen soft or floury ; embryo straight 
with convolute cotyledons or incurved ; radicle inferior. 
Genera about 22 ; species about 220. 
Distribution : — Chiefly American, a few in Africa., India, the 
Mascarene and Pacific Islands. 
