| Scientific Name | Authority | Status |
|---|---|---|
| Petalocentrum angustifolium | Schltr. | synonym |
| Petalocentrum pusillum | (Schltr.) Schltr. | synonym |
| Sigmatostalix bicornuta | Rolfe | synonym |
| Sigmatostalix aurosanguinea | Rchb.f. | synonym |
| Sigmatostalix peruviana | Rolfe | synonym |
| Sigmatostalix pusilla | Schltr. | synonym |
| Sigmatostalix graminea | (Poepp. & Endl.) Rchb.f. | synonym |
| Petalocentrum bicornutum | (Rolfe) Schltr. | synonym |
| Specklinia graminea | Poepp. & Endl. | synonym |
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