sorus

New Latin sōrus, from Ancient Greek σωρός (sōrós, “heap”).

• IPA^(key): /ˈsɔːɹəs/

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sorus (plural sori)

1. (mycology, lichenology) Any reproductive structure, in some lichens and fungi, that produces spores.
2. (botany) A cluster of sporangia on the edge or underside of a fern frond.

• fruit dot

• teleutosorus
• uredosorus

• soral
• sorocarp
• sorophore

• sorus on Wikipedia.Wikipedia
• sori on Wikimedia Commons.Wikimedia Commons

• ORuss., Russo, Russo-, sours

From Ancient Greek σωρός (sōrós, “heap”).

sōrus m (genitive sōrī); second declension

1. (mycology, lichenology) Any reproductive structure, in some lichens and fungi, that produces spores.
   • 1874, “Neu aufgestellte Arten”, in Leopold Just, editor, Botanischer Jahresbericht ^GB, volume 2, page 317:

     ''Calosphaeria obvoluta'' Karst. (ds. S. 158). Perith. 8–16 in soros orbiculares mediocres dense stipata, circinantia, atra, villo fusco obducta tamquam contextu, sphaeroidea, collis perithecii diametrum plerumque suberantibus ostiolisque per peridermii rimas vel poros emergentibus, plus minus exstantibus plerumque 1 Mm. longis, subaequalibus, decumbentibus, flexuosis, obtusis, hispidis instructa.

     (please add an English translation of this quote)

2. (botany) A cluster of sporangia on the edge or underside of a fern frond.
   • 1847, Horaninov, Paulus, Characteres essentiales familiarum ac tribuum regni vegetabilis et amphorganici ad leges tetractydis naturae conscripti accedit enumeratio generum magis notorum et organographiae supplementum‎, St. Peterburg ^GB: K. Wienhöber, page 14–15:

     Sporangia (capsulae) hypophylla, raro et epiphylla, minuta, lenticularia, turbinata v. subglobosa, saepius annulo, e catenula unica cellularum (10–40) formato, verticali, obliquo v. transversali, ―∣― ―― completo v. obsoleto, cincta, ruptilia, rimosa, rarius acropora, plerumque in soros orbiculares, globosos, oblongos v. lineares et longissimos conferta, raro pauca v. solitaria. Sori e rachi, venis venulisque foliorum, passim in receptacula punctiformia v. majora-globosa, elongata v. longissima tumentibus, imposita v. ad rachin solam residuam, passim alatam spicati, nudi, pilosi v. indusio supero, infero v. laterali, scarioso, raro coriaceo, deciduo v. durabili, vero v. spurio, tecti v. involucrati.

     (please add an English translation of this quote)

   • 1847, Horaninov, Paulus, Characteres essentiales familiarum ac tribuum regni vegetabilis et amphorganici ad leges tetractydis naturae conscripti accedit enumeratio generum magis notorum et organographiae supplementum‎, St. Peterburg ^GB: K. Wienhöber, page 16:

     Sporangia poro verticali v. rimula introrsum hiantia, syncyclica v. biseriata et connata in soros quasi multiloculares (bivalves), circulares, oblongos v. lineares, sparsos, confertos v. totam dorsi superficiem obtegentes, nudos v. indusiatos.

     (please add an English translation of this quote)

Second-declension noun.

• → German: Sorus
• → English: sorus
• → Italian: soro
• → Portuguese: soro
• → Spanish: soro