| Subgenus Arceuthobium | ||||
| Section Arceuthobium | ||||
| Caules cum frequentibus vel infrequentibus verticillatis ramis secundariis; surculi principales vulgo 3-16 cm alti et basi 1-10 mm diametro; flores staminati plerumque 3 meri; anthesis vernalis vel autumnalis. Type species: A. oxycedri (DC.) M. Bieb. | ||||
| 1. | A. abietis-religiosae Heil | |||
| 2. | A. juniperi-procerae Chiovenda* | |||
| 3. | A. oxycedri (DC.) M. Bieb. | |||
| Section Americana Nickrent [Sec. Nov.] | ||||
| Caules cum vel sine verticillatis ramis secundariis; surculi principales vulgo 6-7 cm alti et basi 1-5 mm diametro; flores staminati 3 vel 4 meri; anthesis vernalis; fructus autumno maturant plus quam 15 menses post pollinationem; parasiti praecipue in Pinus. Type species: A. americanum Nutt. ex Engelm. | ||||
| 4. | A. americanum Nutt. ex Engelm. | |||
| 5. | A. verticilliflorum Engelm. | |||
| Section Azorica Nickrent [Sec. Nov.] | ||||
| Caules cum infrequentibus verticillatis ramis secundariis; surculi principalis 7-14 cm alti et basi 5-9 mm diametro; flores staminati plerumque 4 meri; flores pistillatae verticillatis dispositae et cum bractea subtentae; in Juniperus brevifolia parasiticum. Type species: A. azoricum Hawksw. & Wiens | ||||
| 6. | A. azoricum Hawksw. & Wiens* | |||
| Section Chinense Nickrent [Sec. Nov.] | ||||
| Caules cum vel sine verticillatis ramis secundariis; surculi principales 0.5-22 cm alti et basi 1-3 mm diametro; flores staminati 3 vel 4 meri; anthesis vernalis vel autumnalis; efficiens infectus systemicos in Keteleeria, Pinus, Picea et Abies. Type species: A. chinense Lecomte | ||||
| 7. | A. chinense Lecomte* | |||
| 8. | A. minutissimum J.D. Hooker | |||
| 9. | A. pini Hawksw. & Wiens* | |||
| 10. | A. sichuanense (H. S. Kiu) Hawksw. & Wiens* | |||
| 11. | A. tibetense H. S. Kiu & W. Ren* | |||
| Subgenus Vaginata Hawksw. & Wiens | ||||
| Section Penda Nickrent [Sec. Nov.] | ||||
| Caules flabellatim ramosi secundarii; surculi principales 1-22 cm alti et basi 1.5-3.5 mm diametro; flores staminati 2 vel 3 meri; anthesis mense Septembri; fructus Septembri maturant 12 menses post pollinationem; efficiens infectus systemicos in Pinus. Type species: A. pendens Hawksw. & Wiens | ||||
| 12. | A. guatemalense Hawksw. & Wiens | |||
| 13. | A. pendens Hawksw. & Wiens | |||
| Section Vaginata | ||||
| Series Globosa Nickrent [Ser. Nov.] | ||||
| 14. | A. aureum Hawksw. & Wiens subsp. aureum† | |||
| 15. | A. aureum Hawksw. & Wiens subsp. petersonii Hawksw. & Wiens | |||
| 16. | A. globosum Hawksw. & Wiens subsp. globosum | |||
| 17. | A. globosum Hawksw. & Wiens subsp. grandicaule Hawksw. & Wiens | |||
| Series Rubra Hawksw. & Wiens | ||||
| 18. | A. gillii Hawksw. & Wiens | |||
| 19. | A. nigrum (Hawksw. & Wiens) Hawksw. & Wiens | |||
| 20. | A. oaxacanum Hawksw. & Wiens* | |||
| 21. | A. rubrum Hawksw. & Wiens | |||
| Series Vaginata | ||||
| Syn. Series Stricta Hawksw. & Wiens (Brittonia 22:266, 1970) | ||||
| 22. | A. durangense (Hawksw. & Wiens) Hawksw. & Wiens | |||
| 23. | A. hawksworthii Wiens & C. G. Shaw III† | |||
| 24. | A. strictum Hawksw. & Wiens | |||
| 25. | A. vaginatum (Willd.) Presl subsp. vaginatum | |||
| 26. | A. vaginatum (Willd.) Presl subsp. cryptopodum (Engelm.) Hawksw. & Wiens | |||
| 27. | A. yecorense Hawksw. & Wiens | |||
| Series Minuta Hawksw. & Wiens | ||||
| 28. | A. divaricatum Engelm. | |||
| 29. | A. douglasii Engelm. | |||
| Section Pusilla Nickrent [Sec. Nov.] | ||||
| Caules flabellatim ramosi secundarii si adsunt; surculi principales 1-21 cm alti et basi 1-9 mm diametro; flores staminati vulgo 3 meri, aliquando 2 vel 4 meri; lobi perianthii cum rubra interna superficie; anthesis vernalis vel autumnalis. Type species: A. pusillum Peck | ||||
| 30. | A. bicarinatum Urban | |||
| 31. | A. hondurense Hawksw. & Wiens* | |||
| 32. | A. pusillum Peck | |||
| Section Campylopoda Hawksw. & Wiens | ||||
| 33a. | A. abietinum Engelm. ex Munz f. sp. concoloris | |||
| 33b. | A. abietinum Engelm. ex Munz f. sp. magnificae | |||
| 34. | A. apachecum Hawksw. & Wiens | |||
| 35. | A. blumeri A. Nelson | |||
| 36. | A. californicum Hawksw. & Wiens | |||
| 37. | A. campylopodum Engelm. | |||
| 38. | A. cyanocarpum (A. Nelson ex Rydberg) Coulter & Nelson | |||
| 39. | A. laricis (Piper) St. John | |||
| 40. | A. littorum Hawksw., Wiens & Nickrent | |||
| 41. | A. microcarpum (Engelm.) Hawksw. & Wiens | |||
| 42. | A. monticola Hawksw., Wiens & Nickrent | |||
| 43. | A. occidentale Engelm. | |||
| 44. | A. siskiyouense Hawksw., Wiens & Nickrent | |||
| 45. | A. tsugense (Rosendahl) G. N. Jones subsp. tsugense | |||
| 46. | A. tsugense (Rosendahl) G. N. Jones subsp. mertensianae Hawksw. & Nickrent | |||
| *Taxa not examined using molecular methods, hence placement is tentativ †Recently obtained ITS and 5.8S rDNA sequences indicate that A. aureum subsp. aureum is closely related to A. globosum and that A. hawksworthii is related to A. vaginatum. |
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