Hypocrella raciborskii Zimm. Centralblatt f. Bakt., Bd. 7: 875 (1901) Hypocrella warneckiana P. Henn., Engler's Bot. Jahrbuch 38: 113 (1905)

Anamorph state: Aschersonia placenta Berk.

Specimens were found on the underside of leaves of forest plants. Hosts are whiteflies (Homoptera; Aleyrodidae). Stroma, circular to oval, consisting of dense interlaced mycelial mat, sometimes margin surrounded by membranous hypothallus, up to 6 mm diam., white, pale yellow or orange; perithecia in tubercles, erect, solitary or aggregated, arising from the stroma, each tubercle containing one perithecium, perithecia elongated flask-shaped, with a long neck, sometimes ovoid or irregular, 300- 450 µm deep, 125-360 µm diam.; asci cylindrical, up to 450 µm long, ca. 6.5-15 µm diam., with a distinct, thickened hyaline cap 7.5-9 µm long, 7.5-10 µm diam.; ascospores divide into part-spores, cylindrical narrow-oval, tapering slightly towards the ends, ends somewhat rounded to obtuse, 10-16 x 2.5-4 µm, sometimes slightly curved.   As with the anamorph (Aschersonia placenta) the sexual state is found throughout the year. It has also been recorded from sea level to 1800 meters elevation and from Hala Bala National Park on the Thai-Malay border to Doi Inthanon National Park in Chiang Mai. Although the anamorph has been collected from outside of natural forest areas (eg. roadside citrus trees) the teleomorph has not been recorded from outside of natural forest. This species is very variable and is possibly a complex of related species.

Chaverri, P., Liu, M. & Hodge, K.T. (2008). Neotropical Hypocrella (anamorph Aschersonia), Moelleriella, and Samuelsia. Studies in Mycology 60: 1–66.   Petch, T. (1921). Studies in entomogenous fungi: II. The genera Hypocrella and Aschersonia. Annals of the Royal Botanic Gardens Peredinaya 7: 167-278.