Agricultural Marketing Service, USDA § 201.56–10 (A) One or more essential structures and become thin, leaf-like, and photo- impaired as a result of decay from pri- synthetic. mary infection. (3) Shoot system: The hypocotyl (B) Albino. elongates carrying the cotyledons above the soil surface. The epicotyl [59 FR 64504, Dec. 14, 1994] usually does not show any development § 201.56–8 Flax family, Linaceae. within the test period. Areas of yel- lowish pigmentation may develop on Kind of seed: Flax. the hypocotyl in cotton. (a) General description. (4) Root system: A primary root, with (1) Germination habit: Epigeal dicot. secondary roots usually developing (Due to the mucilaginous nature of the within the test period. Areas of yel- seed coat, seedlings germinated on lowish pigmentation may develop on blotters may adhere to the blotter and the root in cotton. appear to be negatively geotropic.) (b) Abnormal seedling description. (2) Food reserves: Cotyledons which (1) Cotyledons: expand and become photosynthetic. (i) Less than half of the original cot- (3) Shoot system: The hypocotyl yledon tissue remaining attached. elongates carrying the cotyledons (ii) Less than half of the original cot- above the soil surface. The epicotyl yledon tissue free of necrosis or decay. usually does not show any development (Remove any attached seed coats at within the test period. the end of the test period for evalua- (4) Root system: A primary root, with tion of cotyledons.) secondary roots usually developing (2) Epicotyl: within the test period. (i) Missing. (May be assumed to be (b) Abnormal seedling description. present if both cotyledons are intact.) (1) Cotyledons: (ii) [Reserved] (i) Less than half of the original cot- (3) Hypocotyl: yledon tissue remaining attached. (i) Deep open cracks or grainy lesions (ii) Less than half of the original cot- extending into the conducting tissue. yledon tissue free of necrosis or decay. (ii) Malformed, such as markedly (2) Epicotyl: shortened, curled, or thickened. (i) Missing. (May be assumed to be (4) Root: present if cotyledons are intact.) (i) None. (ii) [Reserved] (ii) Weak, stubby, or missing primary (3) Hypocotyl: root with weak secondary or adven- (i) Deep open cracks extending into titious roots. the conducting tissue. (5) Seedling: (ii) Malformed, such as markedly (i) One or more essential structures shortened, curled, or thickened. impaired as a result of decay from pri- (4) Root: mary infection. (A cotton seedling with (i) None. yellowish areas on the root or (ii) Weak, stubby, or missing primary hypocotyl is classified as normal, pro- root with weak secondary or adven- vided the cotyledons are free of infec- titious roots. tion.) (5) Seedling: (ii) Albino. (i) One or more essential structures impaired as a result of decay from pri- [59 FR 64505 Dec. 14, 1994] mary infection. § 201.56–10 Spurge family, (ii) Albino. Euphorbiaceae. [59 FR 64505 Dec. 14, 1994] Kind of seed: Castorbean. (a) General description. § 201.56–9 Mallow family, Malvaceae. (1) Germination habit: Epigeal dicot. Kinds of seed: Cotton, kenaf, and (2) Food reserves: Cotyledons, which okra. are thin and leaf-like; endosperm (a) General description. (fleshy food-storage organs) usually (1) Germination habit: Epigeal dicot. persisting in the laboratory test. (2) Food reserve: Cotyledons, which (3) Shoot system: The hypocotyl are convoluted in the seed; they expand lengthens, carrying the cotyledons, 353 .