Quercus microphylla

	Quercus microphylla
Author	Née 1801
Synonyms	frutex Trelease 1924 frutex var. uhdeana Trel. 1924 macrocarpa Endl. 1848, nom. illeg. not Michx. 1801 microphylla var. uhdeana (Trel.) A.Camus 1939 repanda Benth. 1840, not Bonpl. 1809
Local names
Range	Mexico (Michoacan, Jalisco, Mexico, Hidalgo, Tlaxcala) ; 2000-3000 m ;
Growth habit	small shrub 0.4-1 m tall, branched even at base of trunk;
Leaves	1-3.5 x 0.7-2 cm; deciduous; elliptic, more or less narrowly; apex obtuse or rounded, sometimes a little pointed; base rounded or cordate; margins slightly rolled under, entire or slightly toothed near apex (2-4 pairs of teeth); shiny grey-green, rough above, with stalkless 6-8 rays stellate hairs; yellowish persistent tomentose beneath (stellate stalkless trichomes with up to 15 rays); petiole tomentose 2-4 mm;
Flowers	pistillates flowers on a tomentose peduncle reaching 1cm long, 1mm thick;
Fruits	acorn 1-1.5 cm; globose to ovoid; mucronate; stalkless; singly or paired; enclosed 1/2 or 1/3 by scaly, half-round cup;
Bark, twigs and buds	bark fissured, not scaly, dark; twigs 1-1.5 mm in cross-section, glabrescent the second year; bud 1-2mm, brown, obtuse, with ciliate scales;
Hardiness zone, habitat	not hardy; prefers dry places;
Miscellaneous	-- A. Camus : n° 242; -- Section Quercus; sub-section Microphyllae; -- Q.frutex is considered as a separate species by some Mexican Authors (S. Romero Rangel 2002, S. Valencia-A., 2004, The Plant List 2013), differing from Q. microphylla in having taller height (to 3 m), scally bark, densely and persistently (nearly 2 years) tomentose twigs 1-2 mm in diameter, longer leaves (1.8-6 x 1-2 cm), foliar apex mucronate, lower face less tomentose (pediculate stellate hairs with only 5-9 rays), acorn never globose; at 2300-3000 m in Mexico ((Mexico, Hidalgo, Jalisco, Michoacan, Puebla, Queretaro, San Luis Potosi, Tlaxcala, Veracruz). Only the variety uhdeana Trel. stays as synonym of microphylla.
Subspecies and varieties
Pictures

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