A Contribution to the Life History of Impatiens sultani

Abstract

This paper is based upon a study of slides made through a series of years for class use in the Botany Department of Wellesley College. The material was taken from greenhouse plants of the rose or bright pink variety of Impatiens Sultani Hook. The bright red and light pink varieties also were growing in the greenhouse, but care was taken to collect material from the rose-flowered plants only. Some of the plants from which the flowers were collected were chance seedlings. No attempt was made to determine whether or not these were a pure strain of the rose-colored form. In BAILEY'S (4) Standard Cyclopedia of Horticulture the original form of 1. Sultani is given as a rich scarlet, shades ranging from pink to almost purple being found on hybrids or sports. If this be true, then all the rose-colored forms used for this study are either hybrids or sports. According to BAILEY the species I. Sultani was originally found in Zanzibar and named by HOOKER in honor of the Sultan of Zanzibar. In ENGLER and PRANTL'S Die Natirlichen Pfianzenfamilien (i6) it is cited from Sierra Leone, Western Africa. It is stated in GRAY'S Manual that the Balsaminaceae often contain two kinds of flowers, the large showy ones which rarely ripen 289

A Critical Review of the Types of Embryo Sacs in Angiosperms

“…Both species need to be reinvestigated Jonsson (1879-80) This is certainly incorrect, for Roy (1933) Jonsson (1879-80) As pointed out by Andersson (1931). this is incorrect BALSAMINACEAE Ottley (1918) Schurhoff (1931, p. 328) thinks this to be a mistake and regards the development as normal RHAMNACEAE Chiarugi (1930) Dahlgren (1928), Johri (1936ft) Johri (19366) Dahlgren (1928) Dahlgren (1934) Dahlgren (1928) Johri ( in the chalazal part of the embryo sac, which is commonly 5-nucleate. Narasimha-Murthy (1933) Maheshwari & Singh (1934) report Normal-type in C. benghalensis and it is almost certain that C. stricla will also be found to be so on reinvestigation PALMACEAE Radermacher (1925) .…”

“…Andersson (1931). this is incorrect BALSAMINACEAE Ottley (1918) Schurhoff (1931, p. 328) thinks this to be a mistake and regards the development as normal Dahlgren (1928), Johri (1936ft) Johri (19366) Dahlgren (1928) Dahlgren (1934) Dahlgren (1928) Johri (…”

Pollen ontogeny linked to tapetal cell maturation inImpatiens parviflora(Balsaminaceae)

“…Due to the presence of intra-archesporic sterile protrusions in Impatiens, two hypotheses have been proposed for the origin of this secretory tissue: Narayana (1963) proposed a double origin, namely parietal and archesporic, whereas Ottley (1918) argues for a completely archesporic nature. Observations of developmental stages preceding the MMC stage, which is not covered in this study, will elucidate the origin of these protrusions.…”