62 LXXXIX. BORAGINEZ (BAKER AND WRIGHT). [Echium. 
2. EB. longifolium, Delile, Fi. Hgypte, 184, t.16, fig. 3. Annual, 
with slender root. Stems branched, with copious spreading bristles. 
Stem-leaves small, sessile, linear-oblong: radical-leaves oblanceolate, 
obtuse, narrowed into a short petiole. Spikes many, lax; bracts 
lanceolate, 4—6 lin. long. Calyx very bristly, 4 lin. long; segments 
lanceolate. Corolla bright blue, twice as long as the calyx; lobes 
small, orbicular. Stamens reaching to the tip of the corolla-lobes. 
Nuts ovoid, 2 lin. long, rugose on the outer face.—DC. Prodr. x. 23. 
Schweinf. Beitr. Fl. Aethiop. 115. 
Wile Land. Nubia: Soturba Mountains, Schweinfurth, 2063! in Wadi 
Mahas, Wady Dongola and near El] Korehr, Ehrenberg ex Schweinfurth. 
Also in Egypt. 
3. E. arenarium, Guss. Ind. Hort. Boccad. 1825 and Pl. Rar. 88, t. 
17. Annual or biennial. Stems short, diffuse, clothed with short 
ascending bristles. Leaves all obtuse, oblanceolate. Spikes lax, 
elongate ; bracts large, ovate-lanceolate. Calyx very hispid, 3 lin. long, 
but little accrescent ; tube short; teeth lanceolate. Corolla bright 
blue, 4-6 lin. long. Stamens comparatively short. Nuts ovoid, acute, 
strongly tubercled.—DC. Prodr. x. 21; Schweinf. Beitr. Fl. Aethiop. 
115. 
Nile Land. Sennar: near Wolet Medene (Wold Medineh), and near Roseires, 
Cienkowsky ex Schweinfurth, 
Also in South Europe, North Africa, and Western Asia. 
OrveR XC. CONVOLVULACEA., (By J. G. Baker and 
BY Rendle.) 
Flowers hermaphrodite (very rarely unisexual), regular (very rarely 
slightly zygomorphic). Calyx inferior; sepals 5 (very rarely 4), free 
(rarely united at the base), much imbricate, equal or more or less 
unequal, often, especially the outer, accrescent. Corolla gamopetalous, 
usually funnel-shaped, sometimes more or less campanulate, or hypo- 
-erateriform, rarely urceolate; limb subentire or 5-lobed, or deeply 
5-partite (very rarely 4-partite), in bud generally induplicate- 
valvate, often contorted, glabrous inside, frequently more or less 
definitely marked on the outside into more or less hairy and veined 
midpetaline- areas, which are outside in the bud, separated by 
glabrous episepaline areas. Stamens 5 (very rarely 4), inserted low 
down in the corolla-tube, opposite the sepals; filaments equal or 
unequal, filiform, generally dilated and glandular hairy at the base, 
rarely stipulate, rarely attached to scales; anthers introrse, oblong, 
often more or less sagittate at the base. Pollen spherical and spinose 
all over, or spherical and smooth, or ellipsoidal and marked with longi- 
tudinal or other folds. Hypogynous disc annular or cup-shaped, often 
shallowly 5-lobed, sometimes obsolete. Ovary superior, entire, of 2 
(rarely 3) united carpels, 2- (rarely 3-) celled, sometimes 1-celled, or by 
