REFERENCES
- Abe K., 1972.—Contributions to the embryology of the family Orchidaceae. VII. A comparative study of the orchid embryo sac. Sci. Rep. Tôhoku Univ. Ser. IV (Biol.), 36: 179–201.
- Arekal G.D. and Nagendran C.R., 1974.—Additional notes on Farmeria indica Willis (Podostemaceae). Proc. Indian Acad. Sci. Sect. B, 80: 226–228.
- Battaglia E., 1971.—The embryo sac of Podostemaceae. An interpretation. Caryologia, 24: 403–420.
- Chiarugi A., 1927.—II gametofito femmineo delle Angiosperme nei suoi vari tipi di costruzione e di sviluppo. Nuovo Giorn. Bot. Ital, 34: 5–133.
- Chiarugi A., 1933.—Lo sviluppo del gametofito femmineo della Weddellina squamulosa Tul. (Podo-stemonaceae). Atti Accad. Naz. Lincei (Roma), 17: 1095–1100.
- Chopra R.N. and Mukkada A.J., 1966.—Gametogenesis and pseudo-embryo sac in Indotri-sticha ramosissima (Wight) Van Royen. Phytomorphology, 16: 182–188.
- Hammond B.L., 1937.—Development of Podostemon ceratophyllum. Bull. Torrey Bot. Club, 64: 17–36.
- Jäger-zürn I., 1967.—Embryologische Untersuchungen an vier Podostemaceen. Österr. Bot. Zeits, 114: 20–45.
- Magnus W., 1913.—Die atypische Embryonalentwicklung der Podostemaceen. Flora, 105: 275–336.
- Mukkada A.J., 1964.—An addition to the bisporic embryo sac. The Dicraea type. New Phytol, 63: 289–292.
- Mukkada A.J., 1969.—Some aspects of the embryology, morphology and biology of Terniola zeylanica(Gardn.) Tulasne. New Phytol, 68: 1145–1158.
- Nagendran C.R., 1974.—Is the embryo sac of Podostemaceae bisporic? Curr. Sci, 43: 259–260.
- Razi B.A., 1949.—Embryological studies of two members of the Podostemaceae. Bot. Gaz, 111: 211–218.
- Razi B.A., 1955.—Some aspects of the embryology of Zeylanidium olivaceum (Tul.) Engl, and Lawia zeylanica Tul. Bull. Bot. Soc. Bengal, 9: 36–41.
- Razi B.A. 1966.—Some observations on the embryology of the Podostemaceae. Proc. Autumn Sch. Bot. Mahabaleshwar, India, 303–319.
- WENT F.A.F.C, 1910.—Untersuchungen über Podostemaceen. III. Verh. K. Akad. Wetensch.(Amsterdam), 2. Sect, 16: 1–18.
- WENT F.A.F.C 1926.—Untersuchungen über Podostemaceen. III. Verh. K. Akad. Wetensch. (Amsterdam), 2. Sect, 25: 1–58.
- Willis J.C., 1902.—A revision of the Podostemaceae of India and Ceylon. Ann. R. Bot. Gdns. Peradeniya, 1: 181–250.