Lyonia
Family: Ericaceae
Lyonia image
Liz Makings
  • FNA
  • Gleason & Cronquist
  • Resources
Walter S. Judd in Flora of North America (vol. 8)
Shrubs or trees, (sometimes with woody burl, resprouting after fire). Stems erect to arching; twigs hairy, sometimes glabrescent (sometimes also lepidote). Leaves deciduous or persistent; blade elliptic, obovate, or ovate, membranous to coriaceous, margins entire, undulate, or serrulate [irregularly serrate], plane or revolute, surfaces multicellular, peltate-scaled or short-stalked stipitate-glandular-hairy, often unicellular-hairy on major veins or abaxial surface; venation brochidodromous (or reticulodromous). Inflorescences axillary fascicles, panicles, or racemes, (2-)5-8(-12)-flowered, sometimes flowers solitary, (produced just before flowering). Pedicels: bracteoles 2, at or near base. Flowers: sepals usually [4-]5[-8], slightly connate, ovate-deltate to lanceolate; petals usually [4-]5[-8], connate nearly their entire lengths, white to red, corolla cylindric to urceolate, lobes much shorter than tube, (sparsely stipitate-glandular-hairy or peltate-scaled); stamens usually [8-]10[-16], included; filaments geniculate, flattened, roughened or hairy, with or without spurs; anthers without awns, dehiscent by elliptic pores; pistil usually [4-]5[-8]-carpellate; ovary [4-]5[-8]-locular; (style slightly longer than stamens); stigma capitate-truncate. Fruits capsular, globose to ovoid or ellipsoid, dry, (with [4-]5[-8] pale, decidedly thickened, whitish sutures). Seeds ca. 100-300, ellipsoidal, narrowly oblong, obovoid to angular-obovoid or narrowly conic, (sometimes tailed); testa cells elongate. x = 12.
Vascular plants of NE US and adjacent Canada
Fls 5-merous; cal saucer-shaped to campanulate, deeply divided, the lobes valvate; cor globose to tubular or ovoid, the lobes short; stamens well included; filaments basally dilated, geniculate above; anthers ovate, dorsifixed, spurred but awnless, opening by 2 terminal pores; style columnar to fusiform; stigma truncate; capsule globose to truncate-ovoid, loculicidal, the sutures thickened and appearing as 5 rounded ribs; deciduous or evergreen shrubs with alternate, entire or minutely serrulate lvs; fls white to rose, on long pedicels in umbelliform lateral clusters that may be borne in the axils of the lvs or may be distributed along lfless branches to form a compound, racemiform to paniculiform infl. 35, N. Hemisphere.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Species within inventory project: Intermountain Regional Herbarium Network
Lyonia affinis
Image of Lyonia affinis
Lyonia alainii
Image of Lyonia alainii
Lyonia alpina
Image of Lyonia alpina
Lyonia buchii
Image of Lyonia buchii
Lyonia doyonensis
Image of Lyonia doyonensis
Lyonia ekmanii
Images
not available
Lyonia ferruginea
Image of Lyonia ferruginea
Lyonia fruticosa
Image of Lyonia fruticosa
Lyonia glandulosa
Images
not available
Lyonia heptamera
Image of Lyonia heptamera
Lyonia jamaicensis
Image of Lyonia jamaicensis
Lyonia latifolia
Images
not available
Lyonia ligustrina
Image of Lyonia ligustrina
Lyonia longipes
Images
not available
Lyonia lucida
Image of Lyonia lucida
Lyonia macrophylla
Image of Lyonia macrophylla
Lyonia maestrensis
Image of Lyonia maestrensis
Lyonia mariana
Image of Lyonia mariana
Lyonia microcarpa
Image of Lyonia microcarpa
Lyonia myrtilloides
Image of Lyonia myrtilloides
Lyonia nipensis
Image of Lyonia nipensis
Lyonia obtusa
Image of Lyonia obtusa
Lyonia octandra
Image of Lyonia octandra
Lyonia ovalifolia
Image of Lyonia ovalifolia
Lyonia palustris
Image of Lyonia palustris
Lyonia paniculata
Images
not available
Lyonia rubiginosa
Image of Lyonia rubiginosa
Lyonia squamulosa
Image of Lyonia squamulosa
Lyonia stahlii
Images
not available
Lyonia tinensis
Image of Lyonia tinensis
Lyonia trinidadensis
Image of Lyonia trinidadensis
Lyonia truncata
Image of Lyonia truncata
Lyonia tuerckheimii
Image of Lyonia tuerckheimii
Lyonia urbaniana
Image of Lyonia urbaniana
Lyonia villosa
Image of Lyonia villosa