. Bulletin of the British Museum (Natural History) Botany. N. K. B. ROBSON. Fig. 65 Distribution of sect. 17. Hirtella. x = area of most primitive species. which are morphologically closer to H. podocarpoides, the Hirtella group (with basic chromosome numbers probably n = 10-8) is centred in eastern Anatolia and Transcaucasia and has primitive species which are morphologically closer to H. cordifoliwn. From eastern Anatolia, species of sect. 17. Hirtella (Fig. 65) extend round the Fertile Crescent south-westward to Israel and Jordan and south-eastward along the Zagros Mountains to Shiraz in Ir
. Bulletin of the British Museum (Natural History) Botany. N. K. B. ROBSON. Fig. 65 Distribution of sect. 17. Hirtella. x = area of most primitive species. which are morphologically closer to H. podocarpoides, the Hirtella group (with basic chromosome numbers probably n = 10-8) is centred in eastern Anatolia and Transcaucasia and has primitive species which are morphologically closer to H. cordifoliwn. From eastern Anatolia, species of sect. 17. Hirtella (Fig. 65) extend round the Fertile Crescent south-westward to Israel and Jordan and south-eastward along the Zagros Mountains to Shiraz in Iran. Of the four species that occur farther east than Khrebet Dag (), two (H. elongatum and H. scabrum) reach the Altai Mts ( Kazakhstan). Beyond the Caucasus-Anatolian region, where by far the greatest number of species are found, the section 'peters out' westwards with two markedly disjunct species which have distributional 'arcs' to the south and north, respectively, of Italy. To the south, the mainly Central Asian to Anatolian H. elongatum occurs in central Greece (as H. tymphresteum Boiss. & Spruner) as well as in Morocco and south-eastern Spain (as H. callithyrsum Cosson). This species has also been recorded from the Crimea, as has H. hyssopifolium; but all the specimens from there that I have seen belong to H. lydium (= H. ponticum Lipsky). To the north, H. hyssopifolium sens, str., which approaches the primitive species of sect. 19. Coridium (H. asperulifolium), is found in the central Balkans (Serbia, Bulgaria), the south-western Alps (France, Italy) and eastern and south-eastern Spain, where it meets H. elongatum. Sect. 19. Coridium (Fig. 66) comprises five species, four of which are morphologically and geographically isolated. Of these, three form a morphological and geographical series: H. asperulifolium (eastern Transcaucasia), H. coris (central and western Alps) and H. ericoides (south-eastern Spain, Morocco, Tunisia). The other two a
Size: 1820px × 1374px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishmuseumnaturalhistory, bookcentury1900, bookcoll
