Calliandra juzepczukii Standl.

Authors

Rupert C. Barneby

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.

Family

Mimosaceae

Scientific Name

Calliandra juzepczukii Standl.

Type

"Mexico: Arriaga, Chiapas, January 7, 1926, S. Juzepczuk 1382'' — Holotypus, F 621426!, isotypus, LE n.v. FIG. 27

Synonyms

Calliandra juzepczukii Standl.

Description

Species Description - Amply, elaborately microphyllidious (sub)shrubs with 1 to several simple or nearly simple stems 1-2.5 m, exceptionally arborescent to 4 m, the stems and lf-axes densely pilosulous with mostly gray or with mixed gray and sordid or brown hairs to 0.3-0.9 mm, the lvs bicolored, the lfts brown-olivaceous glabrous and lustrous above, paler dull brown and minutely strigulose beneath, ciliolate, the inflorescence a simple terminal efoliate pseudoraceme of few-fld umbelliform racemes well exserted from foliage, the individual fls relatively large, coarsely thick-textured, the corolla white-silky externally; phyllotaxy distichous. Stipules of thin texture, early dry caducous (hence poorly known), the blades lance-ovate ±3.5-5 mm. Lf-formula (viii-)ix-xix/(38-)40-63, the pinnae fewer only in random diminished distal lvs; lf-stks (5-)6.5—13(—15) cm, the petiole 11-24 mm, at middle (0.9—)1.1—2.2 mm diam, the longer interpinnal segments 4—8(-10) mm, the narrow ventral groove obscurely bridged at insertion of pinnae; pinnae shorter toward base of lf-stk, less so distally, the rachis of longer ones (4—)5-8(-9) cm, the longer interfoliolar segments 0.8-1.4 mm; lft-pulvinules 0.1-0.25 x 0.450.6 mm, not wrinkled; lfts firm, plane or ventrally low- convex, in outline linear-oblong from obliquely truncate base, proximally straight but toward apex abruptly bent forward and triangular-apiculate, those near mid-rachis 4-7.5(-7.8) x 1-1.8 mm, (3.4-)3.8-4.6(-4.8) times as long as wide; midrib slender, displaced to divide blade ±1:1.5-2.5, simple or almost so, the posterior primary nerves 1(2), very short and faint. Primary inflorescence-axis (0.5-)l-3 dm; peduncles ascending stout, solitary or fasciculate by 2-3, 7-18(-24) x 1.4—3 mm, ebracteate; capitula 2-5-fld, the receptacle turbinate truncate 3-4 mm diam; bracts resembling stipules but smaller, early papery caducous; pedicels (2-)4—7 x 1.5-2.4 mm; perianth 5-merous, the calyx shortly densely gray-brown-pilosulous, the fleshy- coriaceous greenish corolla densely white-silky-strigose externally, its lobes ±1-1.5 mm thick in section; calyx hemispherical, turbinate-campanulate or shallowly patelliform-campanulate 3.5-6(-6.5) x 6.5-9(-10) mm, the deltate, depressed-deltate or depressed-semicircular and acuminulate teeth 0.6-2 mm; corolla 13.5-17 mm, the lanceolate or lance-elliptic lobes 8-10.5 mm; androecium 110-166-merous, 5.5-7.5 cm, the stemonozone 3-4 mm, the tube 5-6 mm, the tassel crimson-scarlet; intrastaminal nectary 0; ovary linear-oblanceolate glabrous. Pods 1 per capitulum, stiffly erect, straight, 6-7-seeded, in profile 10-12.5 x 1.3-2 cm, the sutural ribs in dorsal view 4-7 mm wide, the woody valves densely gray-velutinous-pilosulous overall; ripe seeds not seen.

Distribution and Ecology - In scrub thickets, semideciduous woodland, and ascending into the edge of oak forest, 100-650 m and in Chiapas to 900 m, locally plentiful on the Pacific slope in s.-e. Mexico (Oaxaca, adj. Veracruz, and Chiapas). — Map 44. — Fl. VI-II.

Relationships - Calliandra juzepczukii, of tropical southeastern Mexico, and its sibling C. palmeri, of southwestern Mexico, together resemble C. houstoniana sens. lat., but differ collectively in the very large, camosulous, white-silky corollas. They differ from one another in size of calyx and leaflets, characters of no great moment in the genus, and they might better be treated as allopatric varieties of one species.

Common Names

Cabello rojo

Distribution

Chiapas Mexico North America| Oaxaca Mexico North America| Veracruz Mexico North America|