nigrescent

adj.

发黑的；

1. Labial color is darker, nigrescent reason?
   嘴唇颜色比较暗，发黑的原因？

Lactarius sect. Nigrescentes
Ravenelia acaciae-nigrescentis
Nigrescent soils under pine in western Viti Levu.
Observations on the nematode Mermis nigrescent and related species.
Active immunization of sheep against Cystocatdus nigrescent.
clase Verrucarietea nigrescentis Wirth 1980 en las calizas Beticas de la Provincia de Granada
La clase Verrucarietea nigrescentis Wirth 1980 en las calizas béticas de la província de Granada
Cross-Compatibility of Trifolium nigrescent with Diploid and Tetraploid Trifolium occidentale
Fertiliser responses by Siratro (Macroptilium atropurpureum) on nigrescent hill soils in South West Viti Levu: superphosphate, potas...
Initial and residual responses to superphosphate by a legume (Macroptilium atropureum) on nigrescent hill soils in South West Viti L...