Xxil HORTUS MORTOLENSIS 
Mill. Dict. = Patuie Minurr, The Gardeners’ Dictionary, etc., 
8th ed. London, 1768. 
Moggr. Fl. Ment. = J. TRAHERNE Moaeriper, Contributions to 
the Flora of Mentone, and to a Winter Flora of 
the Riviera, etc. London, 1871. 
Monatsschrift f. K. = Monatsschrift fiir Kakteenkunde. Neu- 
damm. Periodical. 
Moris, Fl. Sard. = Jos. Hyacintu. Mortis, Flora Sardoa seu His- 
toria Plantarum in Sardinia et adjac. Insulis 
Sponte Nascentium, etc. Taurini, 1837-1859. 
4 vols. 
Nich. Dict. = Gnoree Nicnotson, The Illustrated Dictionary of 
Gardening, a Practical and Scientific Encyclo- 
peedia of Horticulture for Gardeners and Botanists. 
London, 1888. 
Nich. Dict. Suppl. = Ibid., The Century Supplement to the 
. Dictionary of Gardening. London, 1901. Supple- 
ment to the above. 
N. Pf. = ENGLER und Prantt, Die Natiirlichen Pflanzenfamilien 
nebst ihren Gattungen und wichtigeren Arten. 
Leipzig, 1889-1910. 4 parts. 
Pfeiff. Hn. = Lup. Preirrer, Enumeratio Diagnostica Cactacearum 
hucusque cognitarum. Berolini, 1837. 
Pf. & Otto = Pfeiff. é Otto, ddb.—=L. Preirrer und Fr. Orto, 
Abbildung und Beschreibung blithender Cacteen. 
Figures des Cactées en fleur, etc. Cassel und 
Leipzig. 
Pl. Gr. = P. J. Repoutsé et A. P. De CANDoLLE, Plantarum Suce- 
culentarum Historia, ou Histoire Naturelle des 
Plantes Grasses. Paris, 1799. 3 vols. 
Red. ¢ Thor. = P. J. Repouts et C. A. THory, Les Roses. 3rd ed. 
Paris, 1835. 
Red. Lil. = P. J. Repouts#, Les Liliacées. Paris, 1802-1816. 
8 vols. 
Ref. Bot. = W. Wiuson Saunpers, Refugium Botanicum ; or, 
Figures and Descriptions of little-known or new 
Plants, ete. The descriptions by H. G. REIcHEN- 
BACH and J. G. Baxer. London, 1869-1872. 
Rept. Miss. B. G. = Missouri Botanical Garden; Annual Report. 
St. Louis, Mo., 1890-1910. 
Rev. Hort. Belg. = Revue de l’Horticulture Belge et Ktrangére. 
Gand. Periodical. 
