Kyangma
Left channel (Skt. lalanā)
Kyangma (rkyang ma) — the left channel, white in colour, paralleling uma to its left. Conduit of the white drop (thig le dkar po) inherited from the father; in the gendered iconography it is associated with upāya (skillful means), the seminal element, and the male principle. The inversion vs. Hindu nāḍī iconography (where iḍā = left = white = lunar = female) is precisely on the gender mapping: Tibetan Vajrayana keeps the same side and colour but reads the masculine / feminine attributions oppositely. The completion-stage practice draws the winds of both flanking channels into uma; the resulting union of red and white drops at the heart cakra is the somatic correlate of the union of wisdom and means.
Point 3 of 17 in Tibetan Tsa Lung — Three Channels
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Tsongkhapa, A Book of Three Inspirations (primary_canonical)
In the same three-channel/inner-heat section, Tsongkhapa describes kyangma (rkyang ma; Skt. lalanā) as the left flanking channel alongside uma. Its rendered course represents the textual subtle-body scheme and should not be read as a dissected physical vessel.
Mullin, Six Yogas of Naropa (secondary_translation)