From:
Johann Friedrich Theodor (Fritz) Müller
To:
Charles Robert Darwin
Date:
1 Dec 1866
Source of text:
Möller ed. 1915–21, 2: 99–102.
Summary:
Gives observations on orchid ovules ripening long after blooming.
Infertility with own pollen sometimes does and sometimes does not indicate dimorphism; gives observations on Ximenia, Eschscholtzia and Oncidium flexuosum.
Describes some striking seeds eaten by birds,
and some new dimorphic species.
Variation in Thillia.
Confirms CD’s suspicion that the lancet-fish [Amphioxus] lives in competition with invertebrates: it shares its habitat with a similar-looking Ophelia, which is quite unlike other annelids, just as the lancet-fish is unlike other fishes.
Contributor:
Darwin Correspondence Project