) BOTANICAL GAZETTE 
FEBRUARY, 1892. 
The seed coats of Malvacex.* 
P. H. ROLFS. 2 
(WITH PLATE III.) 
Of the investigators who have given the matter of seed 
Coats attention, Gaertner, ! Bischoff,? Schleiden and Vogel, * 
Harz,* Nobbe, * Sempolowski® and Lohde? may be mentioned. 
in,* who has examined the seed coats of thirty-four 
orders, finds that while the structure of the seed coats is use- 
ful in some directions, it is of no taxonomic value.® Bach- 
mann,’ in his paper on the development and structure of 
seed coats of Scrophulariacez, says that the microscopic char- 
acters of seed coats are of little value from a systematic 
‘Standpoint. 
y: 
j 
3 
| 
4 
In the order of presenting the different genera and species 
of this Paper Gray’s Manual has been followed. In all twenty- 
_two genera and thirty-four species were studied. The gen- 
*, A 
‘ \ thesis in Department of Botany, Iowa Agricultural College. 
JAERTNER: i I 
Isc 
as 
Landwirthschaftliche Samenkunde, Berlin, 1885. 
hder Samenkunde, Berlin, 1876. s ee 
Lowsk1: Ueber den Bau der Schalen landwirthschaftlich wichtiger Sa- 
ae: Ueber die Entwickelungsgeschichte und der Bau einiger Samen- 
en. Inaugural dissertation, Naumburg, 1874. p. 34. : 
Sn be : e histologique sur les téguments seminaux des angiospermes. 
: pp. 112, lates. Assoc. 
EL: On baste coats of the genus Euphorbia. Proc. Am. : 
ae Vol. Xxxtx, 1890. - p. 328. mensc 
GS  IMANN : Die Entwickelungsgeschichte undder Bau der Sa —— 
neen. Halle, 1880. pp. 179, 4 plates. 
Vol. XVITI.—No. 2. 
