Starfish mai kai baki (Geastrum melanocephalum)
- Rarraba: Basidiomycota (Basidiomycetes)
- Yankin yanki: Agaricomycotina (Agaricomycetes)
- Darasi: Agaricomycetes (Agaricomycetes)
- Subclass: Phallomycetidae (Velkovye)
- oda: Geastrales (Geastral)
- Iyali: Geastraceae (Geastraceae ko Taurari)
- Genus: Geastrum (Geastrum ko Zvezdovik)
- type: Geastrum melanocephalum (Black-head starfish)
Matasan 'ya'yan itace mai siffar zobe, mai siffar pear ko bulbous, 4-7 cm a girman, tare da kaifi mai kaifi har zuwa 2 cm tsayi, launi daga fari zuwa launin ruwan kasa. Exoperidium (harsashi na waje) hade da endoperidium (harsashi na ciki). Wani muhimmin fasali shine lalata endoperidium a lokacin balaga, sakamakon abin da gleba ya bayyana gaba daya. Yana iya haɓaka duka biyu a ƙasa kuma yana fitowa wani yanki sama da saman. Lokacin da ya girma, harsashi na waje yana karya tauraro-kamar zuwa lobes 4-6 (5-7) (akwai rahotanni na lobes 14), yada a kan ƙasa ko haɓaka gleba mai siffar sama da ƙasa.
Kamar dai babban rigar ruwan sama, ana iya rarraba shi azaman nau'in "meteor".
Da farko, ɓangaren litattafan almara yana da yawa, wanda ya ƙunshi capillium da spores, yayin da yake girma, dan kadan fibrous, foda, launin ruwan kasa. Capillium (na bakin ciki zaruruwa) na inganta sassauta na spore taro, da hygroscopicity sa motsi da kuma inganta fesa na spores.
ZAMA
Naman gwari yana girma a kan ƙasa humus a cikin dazuzzukan dazuzzuka, bel ɗin daji na maple, ash, farar zuma, wuraren shakatawa na gandun daji, da lambuna. Ana samun shi ba sau da yawa ba ko ma da wuya a cikin wuraren da yanayi mai dumi, a cikin ciyayi mara kyau, wuraren shakatawa da lambuna, ƙasa da ƙasa a cikin gandun daji na coniferous. Ana samunsa a cikin dazuzzuka na Turai, da kuma cikin dazuzzukan tsaunuka na tsakiyar Asiya. Lura cewa wannan nau'in ba a rarraba shi zuwa arewa mai nisa. A Yammacin Turai, an san shi ne kawai a Hungary, Jamus, Austria, Switzerland. A cikin yankin Turai na Ƙasar Mu, yana zuwa arewa bai wuce yankin Moscow ba. Duban yana da wuya.
IRIN MASU IMANI
Saboda girman girman, tsirara, ball mai gashi na ɓangaren 'ya'yan itace, wanda, lokacin da ya girma, ba a sanye shi a cikin rufin ciki na harsashi ba, tauraron duniya mai baƙar fata ba zai iya rikicewa da sauran nau'in taurari na duniya ba.