Calliandra houstoniana (Mill.) Standl. var. houstoniana
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Authors
Rupert C. Barneby
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Authority
Barneby, Rupert C. 1998. Silk tree, guanacaste, monkey's earring: A generic system for the synandrous Mimosaceae of the Americas. Part III. Calliandra. Mem. New York Bot. Gard. 74: 1-223.
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Family
Mimosaceae
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Scientific Name
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Type
Lectoholotypus, a fruiting spm so annotated by H. Hernández, BM!; paratypi, BM (fr) = photo, NY!, BM (fl) = Acacia americana non spinosa flore purpureo e Vera Cruz, these all annotated by P. Miller. — Anonymos Houston ex Banks, Reliq. Houston, t. 26. 1781
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Synonyms
Mimosa houstonii L'Hér., Anneslia alamosensis Britton & Rose, Anneslia etzatlana Britton & Rose, Anneslia lucens Britton, Calliandra houstoniana subsp. stylesii D.J.Macqueen & H.M.Hern., Calliandra houstonii (L'Hér.) Benth., Calliandra houstoniana (Mill.) Standl.
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Description
Variety Description - Lf-formula (v-)vi-xii(-xiv)/40-65(-69); longer lf-stks 6—12(—16) cm, the longer interpinnal segments (4.5_)6-13(-20) mm; rachis of longer pinnae (4-)4.5-10(-14) cm; longer lfts (4.2—)5—10(—11) x 0.8- 1.8(-2) mm, the simple or pinnately branched midrib curved forward toward the sharply acute apex, the blade (4.2-)4.5-8(-9) times as long as wide. Inflorescence strigulose-pilosulous or pilose with at least partly, often wholly brown, bronze, or black hairs; peduncles 2—13(—16) mm; pedicels 0.7-4.5(-5) x 0.7-2.5 mm; calyx (1.7-)2-3.6(-4.5) x 2.4-5.4(-5.6) mm, the teeth (0.3-)0.5-1.6(-3) mm; corolla 7.5- 12(—13) mm; androecium 36-76(-100)-merous, (5-)5.5-7 cm, the tassel red beyond the often pallid tube. Pods in profile (6-)7-14 x (1-)1.3-2(-2.3) cm, densely pilose-velutinous with brown or black, sometimes partly or almost wholly pallid hairs.
Distribution and Ecology - In disturbed woodland, along highways, and in pasture thickets, ascending from near sea level into pine- and oak-forest, (0-)5-1800(-2000) m. in s.-w. Mexico sometimes sympatric with var. anomala and in Chiapas s.-ward with var. calothyrsus, locally plentiful in tropical Mexico and Central America: in Mexico s. ward from 27°N in s. Sonora and from 22°30'N in s. Tamaulipas through the Transverse Volcánic Range and interior Oaxaca and Chiapas to Guatemala, Belize, Honduras, and El Salvador. — Map 43. — Fl. VII-XII(-I).
Relationships - The subsp. alamosensis was distinguished by Macqueen and Hernández by texture of corolla and persistent vesture of the pod.
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Distribution
Chiapas Mexico North America| Sonora Mexico North America| Tamaulipas Mexico North America| Oaxaca Mexico North America| Guatemala Central America| Belize Central America| Honduras Central America| El Salvador Central America|