# List of Arceuthobium species

Recently the number of species within the Arceuthobium has been reduced from 42 to 26. The structure of the subgenera and sections follows Nickrent et al. (2004) who resolved the phylogeny of the genus using nuclear ribosomal internal transcribed spacer (ITS) sequences and chloroplast trnT-L-F sequences.
Much of the work in Arceuthobium systematics was undertaken and compiled by Hawksworth and Wiens

## Subgenus Arceuthobium
### Section Arceuthobium

* Arceuthobium juniperi-procerae Chiovenda (Parasite of Juniperus)
* Arceuthobium oxycedri (DC) Bieb. (Parasite of Juniperus)
* Arceuthobium tibetense H.S. Kiu & W. Ren (Parasite of Abies forrestii)

### Section Chinense Nickrent

* Arceuthobium chinense Lecomte
* Arceuthobium minutissimum J.D: Hooker
* Arceuthobium sicuanense (H.S. Kiu) D. Hawksw. & Wiens
* Arceuthobium pini D. Hawksw. & Wiens

### Section Azorica

* Arceuthobium azoricum (Parasite of Juniperus brevifolia)

## Subgenus Vaginata
### Section Americana Nickrent

* Arceuthobium abietis-religiosae Hiel
* Arceuthobium americanum Nutt. Ex Engelm. (Parasite of Pinus banksiana, P. contorta var. latifolia and P. contorta var. murrayana)
* Arceuthobium verticilliflorum Engelm. (The only species lacking explosive seed dehiscence)

### Section Penda Nickrent

* Arceuthobium guatemalense D. Hawksw. & Wiens (Parasite of Pinus ayacahuite. Also the most endangered Arceuthobium due to extensive logging in Guatemala)
* Arceuthobium pendens D. Hawksw. & Wiens (Parasite of piñyon pines)

### Section Globosa Nickrent

* Arceuthobium globosum D. Hawksw. & Wiens including: A. globosum subsp. grandicaule D. Hawksw. & Wiens, A. aureum D. Hawksw. & Wiens subsp. aureum, A. aureum subsp. petersonii D. Hawksw. & Wiens

### Section Pusilla Nickrent

* Arceuthobium bicarinatum Urban.
* Arceuthobium pusillum Peck.

### Section Rubra D. Hawksw. & Wiens

* Arceuthobium gillii D. Hawksw. & Wiens including: A. nigrum D. Hawksw. & Wiens
* Arceuthobium rubrum D. Hawksw. & Wiens including: A. oaxacanum D. Hawksw. & Wiens
* Arceuthobium yecorense D. Hawksw. & Wiens

### Section Vaginata D. Hawksw. & Wiens

This section has the broadest range of host species, parasitizing 20 species of Pinus.
* Arceuthobium hondurense D. Hawksw. & Wiens including: A. hawksworthii Wiens & Shaw
* Arceuthobium strictum D. Hawksw. & Wiens
* Arceuthobium vaginatum (Willd.) Presl. including: A. vaginatum subsp. cryptopodum (Engelm.) D. Hawksw. & Wiens, A. durangense (Engelm.) D. Hawksw. & Wiens

### Section Minuta D. Hawksw. & Wiens

* Arceuthobium divaricatum Engelm. (Parasite of piñyon pines)
* Arceuthobium douglasii Engelm. (Parasite of Pseudotsuga menziesii, occasionally Abies grandis and Picea engelmannii)

### Section Campylopoda D. Hawksw. & Wiens

* Arceuthobium blumeri A. Nelson
* Arceuthobium campylopodumEngelm. including: Arceuthobium abietinum D. Hawksw. & Wiens, Arceuthobium apachecum D. Hawksw. & Wiens, A. californicum D. Hawksw. & Wiens, A. cyanocarpum (A. Nelson ex Rydberg) Coulter & Nelson, A. laricis (Piper) St. John, Arceuthobium littorum D. Hawksw., Wiens & Nickrent, Arceuthobium microcarpum (Engelm.) Hawksworth & Wiens, Arceuthobium monticola D. Hawksw., Wiens & Nickrent, A. occidentale Engelm., Arceuthobium siskiyouense D. Hawksw., Wiens & Nickrent, A. tsugense (Rosendahl) G.N. Jones (Parasite hosts include Larix occidentalis, Tsuga mertensiana, T. heterophylla, Pinus contorta, Abies grandis and Picea engelmannii)