143 
The Pogoniris Section 
Greece. Hymettus, 1848, Heldreich (BM). 
1851, Heldreich (V). 
1852, Orphanides (V) (B). 
Deceleia (Tatoi), 1889, Heldreich (K). 
Parnassus, 1876, Pichler (K) (B). 
1857 and 1876, Heldreich (B). 
1852. Heldreich (V). 
No locality, 1842, Boissier (K). 
Mt Karidili (Euboea), 18 — , Wild (B). 
Mt Malevo (Laconia), 18 — , Orphanides (B). 
Pharmacusae Is. 1879, Heldreich (B). 
Salamis, 1893, Heldreich (B). 
Pentelicon, 1854 and 1870, Heldreich (B). 
Olympus, 1870, Kriiper (B). 
Russia. South Russia, 1828, Prescot (K) (E) (C). 
Odessa, 1893, Kamienski (K) (V) (BM) (B). 
1875, Blau (B). 
Crimea, 17 — , Hb. Pallas (BM). 
1855, Munro (K). 
Sebastopol, 1900, Syrejsczikow (V) (B). 
Charkow, 1861, Lindemann (V). 
Ukraine, 1822, Tscherniaiew (B). 
Volga, 17 — , Pallas (V). 
Sarepta, 18 — , Wunderlich (V) (K). 
1898, Becker (B). 
1887, Becker (B). 
1879, Becker (BM). 
Orenburg, 18 — , Lessing (B). 
Tanais (Don), 1843, Kolenati (B). 
Transcaucasia, 1886, Okye (B). 
Caucasus, 18—, Radde (K). 
Elizabethgrad, 1827, Prescot (C). 
Temir-khan-shura (Caucasus), 1910. Meyer (HortD). 
Asia Minor. Cilicia; Karasubasar, 1900, Halacsy (B). 
Sudek, 1896. Collier (E) (K) (V). 
Mysia ; Balikesri, 1882, Calvert (B). 
Troad ; Ilium, 1879, Virchow (B). 
Phrygia; Karaja, 1901, Warburg (B). 
Natural hybrids. 
It is probable that in Transylvania, where /. putnila and /. aphylla grow in close proximity, natural 
hybrids between the two species have arisen. In these hybrids the inflorescence becomes more complex 
than that of I. pumila and yet not so ample as that of I. aphylla. The influence of /. pumila is seen 
in the long perianth tube. 
To such hybrids the following names are probably to be referred : — 
I. diant ha, C. Koch in Linnaea, XXI. p. 637 (1848). 
I. binata and I. diant/ia, Schur in O. B. Z. x. p. 354 (i860). 
I. scapifera, Borbas ? 
Cf. also the following specimens : 
Rotberg (Transyl.), 1902 and 1903, Barth (B). 
Langenthal (Transyl.), 1899, Barth (V), and 1902, Barth (B). 
Colour varieties. 
The purple variety described in detail is perhaps the most common but there are many other 
forms. I am told that on the Geisberg near Vienna quite half a dozen forms can be found in close 
proximity, and certainly a series of plants collected for me in that neighbourhood have shown great 
variations in colour. Further east, in Russia and in Greece, the yellow forms appear to be the more 
numerous. This has been indicated by plants that I have received from the Caucasus and by others 
that I have raised from seeds from the same locality, by Sir Michael Foster’s MS. notes of plants that 
he received from the Caucasus and from Greece, and by the evidence of herbarium specimens, though 
the latter cannot always be trusted in matters of colour. The following are some of the varieties 
that I have had in cultivation. 
(1) A very dark black red, larger and of richer colouring than the purple flower shown in 
Plate XXXII, from the neighbourhood of Vienna (HortD). 
(2) A pale straw yellow with a faint tinge of green and inconspicuous purplish veins. The blade 
of the falls bears a brown purple or greenish brown patch. This comes from Mt Pentelicus and from 
the Caucasus. It is the /. attica of Boissier and Heldreich (HortD). 
(3) The pale purplish blue forms, known in cultivation as coerulea and azurea (see Plate XXXII). 
There are at least two forms, to which either of these names is applied indifferently, but one is slightly 
