After Earle, 2002
<==o Picea A. Dietrich 1824 (kuuset; spruces) [33 sp.] |-- P. abies (Linnaeus) Karsten 1881 (kuusi; North European spruce, common spruce) |-- P. alcoquiana (Veitch ex Lindl.) Carrière |-- P. asperata Masters 1906 (lohikäärmekuusi; Dragon spruce) |-- P. brachytyla (Franch.) Pritzel (Sargent spruce) |-- P. breweriana S. Watson 1885 (Weeping or Brewer's spruce ) |-- P. chihuahuana Martínez 1942 (Chihuahua spruce) |-- P. crassifolia Komarov (Qinghai spruce) |-- P. engelmannii Parry ex Engelmann 1863 (hopeakuusi; Engelmann spruce, silver spruce, white spruce, mountain spruce) |-- P. farreri Page & Rushforth (Farrer spruce) |-- P. glauca (Moench) Voss 1907 (White spruce, Canada spruce, skunk spruce, cat spruce, single spruce ) |-- P. glehnii |-- P. jezoensis (Sieb. & Zucc.) Carrière (Yezo spruce) |-- P. koraiensis Nakai (Korean spruce) |-- P. koyamai Shiras. 1913 |-- P. likiangensis (Franch.) Pritzel (Lijiang spruce) |-- P. mariana (Miller) Britton Sterns, & Poggenburg 1888 (Black spruce, bog spruce, swamp spruce) |-- P. maxomowiczii |-- P. meyeri Rehder & Wilson (Meyer spruce) |-- P. morrisonicola Hayata 1908 (Taiwan spruce) |-- P. neoveitchii Masters (Veitch spruce, Hubei spruce) |-- P. obovata Ledeb. 1833 (siperiankuusi; Siberian spruce |-- P. omorika (Panèiæ) Purkyne 1877 (serbiankuusi; Serbian spruce) |-- P. orientalis (Linnaeus) Link (kaukasiankuusi; Oriental spruce, Caucasian spruce) |-- P. pungens Engelmann 1879 (Blue spruce, Colorado blue spruce, white spruce, silver spruce, Parry spruce) |-- P. purpurea Mast. 1906 |-- P. retroflexa |-- P. rubens Sargent 1898 (punakuusi; Red spruce, eastern spruce, yellow spruce) |-- P. schrenkiana Fisch. & C.A. Mey 1842 |-- P. sitchensis (Bongard) Carrière 1855 (sitkakuusi; Sitka spruce, tideland spruce, coast spruce, Menzies spruce) |-- P. smithiana (Wall.) Boiss. 1884 (raikuusi; Rai Spruce) |-- P. spinulosa (Griff.) A. Henry 1906 |-- P. torano (Siebold ex K.Koch) Koehne 1893 `-- P. wilsonii Mast. 1903
Reference(s):
- Earle, C. J., 2002-: Pinaceae
–iNet: The Gymnosperm Database: http://www.conifers.org - Hämet-Ahti, L., Suominen, J., Ulvinen, T., Uotila, P. & Vuokko, S., 1984:
Retkeilykasvio
–Suomen Luonnonsuojelun Tuki Oy & Forssan Kirjapaino Oy, Forssa, 1984, 1-544