Myrrhidendron maxonii Coulter & Rose

Myrrhidendron maxonii Coult. & Rose, Jour. Wash Acad. 17: 214. 1927.
Stout, glaucous herbs or small trees, 2-4 m. high from stout tap roots; leaves 3-4 dm. long, ternate-pinnately divided, the leaflets lanceolate, 2-6 cm. long, acute to acuminate, sharply and often irregularly serrate with spinulose teeth to somewhat laciniately lobed, shining and depressed-venose above, paler beneath, conspicuously reticulate, the petiolules with a membranaceous stipular ring; petioles with purplish inflated sheaths about one-half their length; cauline leaves reduced upwards, sometimes to bladeless sheaths; peduncles short, 3-8 cm. long, densely glandular-puberulent above; involucre of 1-3 entire or apically toothed, linear bracts, up to 2.5 cm. long; involucel of several prominently purplish-veined, entire to 5-cleft bractlets with laciniate spinulose lobes, exceeding the flowers, 5-10 mm. long; fruiting rays unequal, 3-6 cm. long, glandular-puberulent on the angles; pedicels 7-9 mm. long, glandular-puberulent ; fruit linear, 1 5-20 mm. long.
Type locality: Cuesta Grande, eastern slope of Chiriqui Volcano, 2000-2900 m., Panama, Maxon 5311.
Distribution: Known only from the region of the type locality (Davidson 983, Pitlier 3099).

Myrrhidendron maxonii là một loài thực vật có hoa trong họ Hoa tán. Loài này được J.M. Coult. & Rose mô tả khoa học đầu tiên năm 1927.