Brookea auriculata Yamazaki (1994: 282)

Neo, Louise, Huurne, Suzanne Ter & Adema, Frits, 2019, A taxonomic revision of the genus Brookea (Plantaginaceae), Phytotaxa 403 (3), pp. 171-186 : 173-174

publication ID

https://doi.org/ 10.11646/phytotaxa.403.3.2

persistent identifier

https://treatment.plazi.org/id/03E85644-7D5F-0B66-FF4B-046DFE9BE820

treatment provided by

Felipe

scientific name

Brookea auriculata Yamazaki (1994: 282)
status

 

2. Brookea auriculata Yamazaki (1994: 282) View in CoL .

Type: — BORNEO. East Kalimantan: Bulungan, Long Bawan, Gunung Paris , 1000–1100 m, 13 Sep. 1990, Kato et al. 23805 (holotype TI [ TI00002287 ]; isotype TI [ TI00002286 ]) .

Shrub. Twigs terete, densely covered by short reddish, dendroid hairs. Leaves sessile, auriculate, ± semi-amplexicaul, elliptic, narrowly ovate or ± rhombic, 5–15 by 2.5–7 cm, index 2.0–2.8, base decurrent, semi-amplexicaul, margin finely denticulate, apex acuminate, above ± scabrous (see notes), below densely hirsute, with dendroid and stellate hairs, midrib and nerves ± sunken above, nerves 9–12 pairs, 3–9 mm apart. Inflorescences 3–12 cm long, peduncle 5–8 mm long, densely reddish villous. Bracts ovate, 3–5 mm long, (both sides) reddish villous. Pedicels 3–5 mm long. Calyx tubular, c. 10 mm long, teeth triangular; outside densely villous with dendroid and stellate hairs, inside densely long hairy, longest hairs 1.5–2.5 mm long; in fruit ovoid, not torn. Corolla c. 15 mm long, tube c. 10 mm long, upper lip bilobed, lobes orbicular, c. 3 by 3 mm, slightly denticulate, lower lip 3-lobed, lobes orbicular, c. 3 by 3 mm, slightly denticulate, middle lobe somewhat smaller, outside glabrous. Stamens: filaments hairy at base. Ovary ovoid, glabrous; style c. 5 mm long. Fruits ovoid, c. 10 by 5 mm, glabrous. Seeds subglobose, 0.4–0.6 by 0.4–0.5 mm, finely pitted.

Distribution: —Borneo: East Kalimantan ( Fig. 2 View FIGURE 2 ).

Habitat: —Elevation: 1000–1100 m.

Notes: —This species is only known from the type collection. It is distinct from all other species of Brookea in its sessile, auriculate leaves. The leaf upper surface is ‘scabrous’ owing to the basal remnants of broken-off hairs. On the twigs, lower leaf surfaces and calyces, most or all hairs are short and dendroid, and on the lower leaf surfaces they are mixed with stellate hairs. B. auriculata can resemble B. dasyantha , which also has sessile leaves that may be slightly auriculate, but it is clearly different in the indumentum— B. auriculata has mainly short dendroid hairs not mixed with long unbranched hairs, while B. dasyantha has, especially at the twigs and inflorescence axes, many long, soft, unbranched hairs.

TI

Herbarium of the Department of Botany, University of Tokyo

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Lamiales

Family

Stilbaceae

Genus

Brookea

Kingdom

Animalia

Phylum

Porifera

Class

Demospongiae

Order

Haplosclerida

Family

Phloeodictyidae

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Lamiales

Family

Stilbaceae

Genus

Brookea

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Lamiales

Family

Stilbaceae

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