Appendix Il: Phytogeography and Geology. 1083 
= (=e a 2 al +S Chl | ore Nees 
Saleas ae eel Sayeed | ony |e ce lage lines 
BES 0 A) ee a es PO Al cee est ate oe |e |e (Nee 
1899 . aueoe 2 Poon 08 ho. oe) oleae OP onan 
1900 GIS ares: (OO || VOI IEO Ae Os OMIO. NAGsit 9. 1828 
1901 Shy OF|ie0 | Onlradrn Orie. 15102-1040) |r| V0 icv 
1902 BS oh i Or Our: Oral) OrleO1 Oseh Sn ihe? 8 0ul=25 
1903 . Tee nOP 208) 10s OrlO? 1) Orr OO 410, | Oe eed en 
1904. Ala) 0. TO OF AOL 0) Ovo O! 0" | 10</ ae 
1905 . TG alae take. ee sOial Pee O. | OP NOM Oe EO. A OF tO) 25" oie Be 
Mean are laos, ae Pea OA ECs TOR toulto- /Voul tor | earieng 
It has been persistently stated that the improved irrigation of 
recent years in Hgypt and the consequent extension of cultivation 
had modified the climate, rendering it cooler in summer, colder in 
winter and increasing the humidity and rainfall. ‘The principal 
change which has taken place in agriculture is the great deve- 
lopment of summer cultivation before the arrival of the flood, 
which has been rendered possible by the repair of the Delta 
Barrage and by the construction of the Zifta and Assiut Barrages 
and the Aswan dam. 
The following table may shown the few species belonging only 
to our subregion (N. d.); those marked by a yare known from Tropical 
Africa or Asia, those with an asterisk are common in the region. 
Ranunculus trachycarpus. + Utricularia stellaris. 
Lepidium Aucheri. » Linaria spuria. 
Silene conoidez. Kufragia viscosa. 
Elatine campylosperma. Orobanche pubescens. 
+ Bergia aquatica. Suaeda splendens. 
Abutilon Avicennae. Albersia Blitum. 
Medicago elegans. + Alternanthera sessilis. 
T. fragiferum. + Polygonum senegalense. 
Astragalus contortiplicatus. * Alisma arcuatum. 
Lathyrus dispermus. Damasonium Bourgaei. 
» annuus. Potamogeton natans. 
Lythrum flexuosum. 5 ~ lucens. 
+ Ammania senegalensis. Spirodela polyrrhiza. 
+ Ceratophyllum muricatum. + Cyperus bulbosus. 
Berula angustifolia. Seirpus parvulus. 
Ammi Copticum. » mucronatus. 
Torilis infesta. + Panicum obtusifolium. 
+ Sphaeranthus suaveolens. # »  prostratum. 
Anthemis Cotula. > »  muticum. 
Matricaria Chamomilla. »  leiogonum 
Carthamus Creticus. » viride. 
+ Sphenoclea Zeylanica. | Hemarthria fasciculata. 
+* Utricularia inflexa. + Dinaeba retroflexa. 
