SOME CRITICAL SPECIES OF ECHIUM. 391 
pinkish purple as shown in Fl. Gr. tab. 179. E. plantagineum frequently 
tends to this colour in the Ionian islands. In the Atlantic islands, io judge 
by the numerous examples in Herb, Kew, it seems usually to be a rich 
purplish blue. 
(IX.) ECHIUM PLANTAGINEUM, L. Three small pieces on one sheet, on 
which is written in a clerk’s hand * Herb. Sibthorp. South of Europe Qy?” 
These have not been named by Smith. 
(X.) EcHIUM ITALICUM, L., labelled by Smith * E. italicum H. L? A 
small piece in fruit, very hirsute. 
(XL) ECHIUM ITALICUM, L., not named by Smith. On the sheet is written 
“ Herb. Sibthorp. South of Europe Qy?” Both X. and XI. are true 
E. italicum, not E. pyrenaicum, which does not seem to grow in Greece. 
(XIL) ECHIUM ARENARIUM, Guss., not named by Smith. It shows the 
typical small dark blue corollas with style as well as stamens included. 
This species is plentifully represented in modern herbaria from Crete and 
from Attica. Halácsy, Consp. Fl. Gr. ii. p. 340, wrongly identifies 
E. diffusum, Sibth. et Sm., with E. arenarium. 
(XIII.) ECHIUM DIFFUSUM, Sibth. et Sm., labelled by Smith * Echium 
diffusum Fl. Gr. tab. 182.” The specimen is in fruit. 
(XIV.) ECHIUM DIFFUSUM, Sibth. et Sm., not named by Smith, but with 
the printed label “ J. Sibthorp M.D.,” showing it to have been collected by 
Sibthorp. It is identical with no. XIII. These two specimens differ 
toto cælo from E. arenarium in their reddish corollas with conspicuously 
exserted style and stamens as long as the upper lobes. The fruiting calyces 
also differ from those of arenarium. It is true that in Fl. Gr. ii. p. 69, 
E. diffusum is described “staminibus corolla brevioribus? and tab. 182 shows 
them about as long as the corolla. But in these specimens they are longer 
than they are drawn by Bauer and certainly not shorter than the corolla. 
The colouring of that figure and the words in the text, “flores punicei, 
precedenti (sc. Æ. hispido) similes," exclude Æ. arenarium. In fact, 
E. diffusum is precisely Æ. sericeum, Haláesy, loc. cit. p. 339, non Vahl, 
quoted by that author for the plant from the sandy shore at Canea, more 
correctly referred by DC., Prodr. x. p. 23, to E. diffusum. Identical 
specimens from the isle of Naxos may be seen in Herb. Gay at Kew, ticketed 
“ E. diffusum Smith. In Naxo insula ann. 1829 ; Despréaux sine nomine 
in herb. Deless. — Frustula haecce speciminis multicaulis dedit Guillemin. 
Schedule Despréauxiane nomen Æ. arenarium Guss. propria manu addidit 
Gussone, sed falso, ui mihi videtur. Species valde affinis E, setoso, Vahlii, 
