SEEDLING STRUCTURE IN THE LEGUMINOS. 65 
of Phaseolus vulgaris, Linn. (Pl. 1. fig. 7), P. multiflorus, Linn., and 
P. erectus, Fisch. (var. nanus). These seedlings show great complexity of 
structure, and for this and other reasons they are difficult subjects of study. 
P. compressus, DC., was described by Gérard (1881, p. 346), but was found 
to exhibit no new anatomical features. The transition phenomena of some 
species described in the present paper show a close relationship to those 
elucidated by these earlier authors ; while in others the occurrence of simpler 
and more complex types is put on record. 
Parr B. 
SUMMARISED INFORMATION. 
SUMMARY LIST. 
INTRODUCTORY. 
In the following tables an attempt is made to collect some of the informa- 
tion at present available on the form and structure of the seedlings of the 
Leguminosx. The contents of the columns are as follows :— 
I. The names of the genera and species whose seedlings have been 
examined, so far as is known to the present author. These are classified 
under their sub-orders, tribes, and sub-tribes, the system adopted being that 
of Taubert (1894). In several cases the genera alone are mentioned ; these 
are mostly taken from the paper of Van Tieghem and Douliot (1888), who 
give a list of the number of protoxylem groups in the main roots of 
many genera, but do not mention the species examined. These may, of 
course, in some instances duplicate the information given for definite species ; 
but it has been considered wise to include them, as they have a certain value 
when considering a group as а whole. (In some of these cases, where the 
genus contains but one species, the specific name and other information has 
been supplied from works of reference.) No rigid system of nomenclature 
has been adopted, but for the most part the names given are those retained 
in the * Index Kewensis.’ 
II. The habit of growth of the mature plant is here indicated by a letter, 
as follows :—T = tree; S = shrub or woody perennial; P = herbaceous 
perennial; A = annual or biennial (hapaxanthic). (Arb = arboreal; Н = 
herbaceous, when the exact habit is not known ; in cases in which not even 
so much as this is known, the column is left blank.) Ап asterisk is affixed 
to the symbol when the plant is a climber. 
LINN. JOURN,—BOTANY, VOL. XLI. F 
