صحم8 اصطحم i. q. اصطخم, q. v.11 اصْحَامَّ, (K,) inf. n. اِصْحِيمَامٌ, (TA,) said of a plant, or herbage, It became intensely green: and it became yellow, (K, TA,) and altered in colour; or, as J says, [in the S,] اصحامّت البَقْلَةُ the herb, or leguminous plant, became yellow: (TA:) thus it has two contr. meanings: or it (i. e. a plant, or herbage,) became intermixed with yellowness in its dark greenness. (AHn, K.) And اصحامّت الأَرْضُ The land became altered [for the worse] in its herbage, and its rain departed: (K:) or, as some say, the land became altered in the colour of its seed-produce, for the reaping: and in like manner, اصحامّ الحَبٌّ the grain became thus altered. (TA.) And اصحامّ الزَّرْعُ The seed-produce was smitten by cold: or began to dry up. (K.) صُحْمَةٌ Blackness inclining to yellowness: or a dust-colour inclining a little to blackness: or redness in whiteness: (K:) or, as some say, yellowness in whiteness. (TA.) أَصْحَمُ Of the colour termed صُحْمَةٌ: (K:) i. e. black inclining to yellowness: (S, K:) &c.: (K:) or, accord. to AA, intensely black: (TA:) fem.صَحْمَآءُ. (K.) b2:  The latter, applied to a فَيْفَآء [or smooth, or waterless, desert], (Sh, K,) or to a بَلْدَة [or district, &c.], (S,) signifies Dusty. (Sh, S, K.) b3:  And الصَّحْمَآءُ is the name of A certain herb, or leguminous plant, (S, K, TA,) not intensely green. (TA.) مُصْحَامٌّ, applied to a plant, or herbage, [&c.,] part. n. of 11 [q. v.]. (TA.)