MONOGRAPHS FOR AN AMATEUR GARDENER'S LIBRARY. 367 
In 1907 he issued " Additions to the Genus Yucca " * in the Eigh- 
teenth Annual Report, Mo. Bot. Gard., chronicling some further notes 
on species already dealt with and on two new and undescribed species, 
Yucca decipiens and Y. Endlichiana. 
The latest work on this genus is " Le Yucche," by G. Molon, 
Milan (1914, fr. 6.50, i2mo). It is but a small manual, but contains 
eight coloured and fifty-three black-and-white figures. It chiefly 
presents us with Trelease's work in a shortened form, and in Italian. 
Many of the illustrations are reproductions of his plates. Its value 
lies in a key to the species based on the nature of the stems and leaves. 
This, as the author states, is of more service in Europe, where, except 
Yucca aloifolia, the plants do not bear fruit ; Trelease's key being 
based on the differences of the fruit -vessels for its main divisions. 
Also, Dr. Molon gives every known specific name and synonym 
in alphabetical order, and includes the numerous garden hybrids 
raised by Sprengel at Naples. These last form the subjects of the 
coloured figures and a few of the photographic ones. 
Compared with Liliaceae, few genera of the Amaryllideae have 
been well monographed. As already stated, many have fine portraits 
in Redoute's great work. 
Dean Herbert, who made a special study of bulbous plants, 
has left, as the chief monument of his labours, a book that is of great 
interest to any studying this Order, viz., " Amaryllidaceae " * (London, 
1837, 8vo, with plain plates, £2 ; with coloured plates, about £3 10s.). 
It is mainly a botanical work, but full of cultural hints, for he grew 
and watched with a keen eye a great number of rare plants. The 
plates have no artistic value, and for the most part represent only 
portions of flowers or leaves. Those drawn from herbarium specimens 
are coloured in the faded hues of the dried flower before him. 
Of separate genera, Narcissus has received most attention. The 
most serious attempt at a monograph is " The Narcissus," * by F. W. 
Burbidge and J. G. Baker (L. Reeve, London, 1875, 8vo, £1 10s.). 
The main portion consists of a review of the genus by Baker, published 
in the Gardeners' Chronicle in 1869, revised and brought up to 
date by the author for this book. The late Mr. Burbidge con- 
tributed introductory chapters on the history, cultivation, diseases, 
and species and varieties, of Narcissus. Those who knew him, or who 
recognize the charm and interest of his writings, will feel this work is 
full of his personality. His knowledge of the old English books on 
plants makes his notes on the varieties very valuable. 
He also contributed forty-eight coloured plates, which are better 
if judged from a botanical than an artistic standard. His outlines 
and dissections are very good, but his method of shading was crude 
and heavy, and the reproduction as to colouring is very poor, a 
smudgy hand-colouring on lithographed plates]; the green tints being 
suggestive of juvenile efforts. 
A smaller and more up-to-date book is " The Book of thejDaffodil,"* 
by^the Rev. Eugene Bourne, vol. xvi. of Handbooks of Practical 
