Capraria

Linnaeus

Sp. Pl. 2: 628. 1753. 1753

Common names: Goat’s head
Introduced
Etymology: Latin capri, goat, and -arius, pertaining to, alluding to consumption by goats
Synonyms: Pogostoma Schrader Xuarezia Ruiz & Pavon
Treatment appears in FNA Volume 17. Treatment on page 334. Mentioned on page 324, 325, 332.

Subshrubs; stolons absent, taproot woody. Stems erect, glabrous or glabrate to hirsute [densely glandular-pubescent]. Leaves deciduous, mostly cauline, alternate; stipules absent; petiole absent; blade not fleshy, not leathery, margins serrate distally, surfaces with punctate glands and internal secretory oil cavities. Inflorescences axillary, racemes; bracts absent. Pedicels present; bracteoles absent. Flowers bisexual; sepals 5, ± distinct, lanceolate, calyx radially symmetric, rotate; petals [4]5, corolla white, sometimes with scattered purple spots inside, radially or bilaterally symmetric, rotate or tubular-funnelform, abaxial lobes 3, adaxial 2; stamens 4 or 5, adnate to base of corolla tube, didynamous or equal, filaments glabrous, staminode 0; ovary 2-locular, placentation axile; stigma ellipsoid [reniform]. Fruits capsules, elliptic, dehiscence loculicidal. Seeds 90–120, brown, ovoid, wings absent. x = 14 or 15.

Distribution

Introduced; Mexico, West Indies, Central America, South America, Pacific Islands, introduced also in Africa (Cape Verde Islands, Ghana), Indian Ocean Islands (Mauritius).

Discussion

Species 4 (2 in the flora).

Capraria is unique in Scrophulariaceae in having alternate leaves with surfaces with punctate glands and with internal oil-secreting cavities.

A molecular study by E. Gándara and V. Sosa (2013) showed that, depending on how Leucophyllum is defined, Capraria may either be considered nested within a broadly defined Leucophyllum or retained as a separate genus, as treated here.

Key

1 Stems and leaf blades hirsute to glabrate or glabrous; leaf blades spatulate; flowers bilaterally symmetric, 10–13 mm; corollas white with scattered purple spots inside, tubular-funnelform, villous inside; stamens 4(or 5), didynamous; styles included. Capraria biflora
1 Stems and leaf blades glabrous; leaf blades lanceolate; flowers radially symmetric, 8–10 mm; corollas white, rotate, glabrous; stamens 5, equal; styles exserted. Capraria mexicana
... more about "Capraria"
Justin K. Williams +
Linnaeus +
Goat’s head +
Mexico +, West Indies +, Central America +, South America +, Pacific Islands +, introduced also in Africa (Cape Verde Islands +, Ghana) +  and Indian Ocean Islands (Mauritius). +
Latin capri, goat, and -arius, pertaining to, alluding to consumption by goats +
sprague1921a +  and williams2004b +
Introduced +
Pogostoma +  and Xuarezia +
Capraria +
Scrophulariaceae +