Home Central American Mosses
Home
Name Search
Family List
Generic List
Species List
!Braunia secunda (Hook.) Bruch & Schimp. Search in The Plant ListSearch in NYBG Virtual HerbariumSearch in Muséum national d'Histoire naturelleSearch in Type Specimen Register of the U.S. National HerbariumSearch in Virtual Herbaria AustriaSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Published In: Bryologia Europaea 3: 161 (fasc. 29–31. Monogr. 3). 1846. (Bryol. Eur.) Name publication detail
 

Project Name Data (Last Modified On 1/3/2014)
Acceptance : Accepted
Project data     (Last Modified On 1/3/2014)
Discussion:

Braunia secunda is often considered a widespread species present in Africa (Magill & Rooy
1998), India (Brotherus 1925), and the Neotropics. De Luna (1992) narrowed the circumscription of
the species to include only paroicous Neotropical collections that have lanceolate, acuminate leaves
with margins recurved to a scabrous dentate apex, and ellipsoid, wrinkled to slightly furrowed capsules.
The capsules of B. andrieuxii and B. secunda are similar in shape, but B. andrieuxii is autoicous
rather than paroicous. In addition, the leaves of B. andrieuxii are broader than those of B. secunda,
have margins recurved only in the lower half, a shorter, broader leaf apex, and weakly sinuose upper
leaf cells. Furthermore, in B. andrieuxii the secondary stem and branch tips are often transformed into
stolons, while in B. secunda stolons generally arise laterally from the secondary stems and branches.
Braunia squarrulosa is similar to B. secunda in leaf shape and in having strongly sinuose upper leaf
cells. It differs in having hair-pointed leaves with margins recurved only in the lower half or less.

Illustrations: Hooker (1818, Tab. 46); Churchill and Linares (1995, Fig. 100 h–k).
Habitat: On shaded rock; 2700 m.
Distribution in Central America:

GUATEMALA. Quetzaltenango: Standley 85253 (F, FH, NY).

World Range: Southwestern and South-Central U.S.A.; Mexico; Central America; Caribbean; Western and Northern South America.

 

Export To PDF Export To Word

Plants medium-sized, in yellow green mats. Primary stems creeping, irregularly branched; leaves
reduced, well spaced, ovate, abruptly long-acuminate, erect below, squarrose-recurved above, 0.6–0.8
mm long; cells pluripapillose; rhizoids red brown, in sparse clusters at abaxial side of leaf insertions,
not or rarely branched. Secondary stems horizontal and often with lateral stolons, or erect and loosely
spreading, 3–5 cm long, irregularly branched; cross section with sclerodermis of 2–5 rows of small,
red brown, thick-walled cells, cortical cells enlarged, yellow to hyaline, firm- or thick-walled, central
strand absent; paraphyllia absent; pseudoparaphyllia absent. Secondary stem and branch leaves erectimbricate
when dry, wide-spreading when wet, oblong-ovate, plicate, 2 mm long, shortly acuminate,
shortly decurrent; margins narrowly recurved, often to near the apex, apices sparsely serrulate to erose;
costa absent; upper cells subquadrate, short-rectangular to rectangular, 8–17 μm long, thick-walled,
strongly sinuose, pluripapillose; basal median cells long-rectangular, 100 x 4 μm, thick-walled, porose,
pluripapillose; alar cells short-rectangular, quadrate, or oblate, 6–12 μm long, thick-walled, smooth.
Paroicous. Perichaetial leaves erect, elongate. Setae elongate, yellow, becoming red to orange with
age, 7–20 mm long. Capsules erect, cylindrical to elliptic, 2 mm long, wrinkled to irregularly furrowed
when dry, light brown, narrowed at the mouth, at times strongly constricted at neck; exothecial
cells small, red, thick-walled in 10–15 rows below the mouth, becoming lax, irregularly quadrate to
short-rectangular below, neck cells small, irregularly subquadrate to short-rectangular; stomata in
neck; opercula obliquely conic-rostrate, to 1 mm long; annuli rudimentary, cells often clinging to capsule
mouth or operculum; peristome absent. Spores irregularly subspherical to oblong, papillose,
18–26 μm. Calyptrae cucullate, smooth or sparsely hairy, 3.5–4.5 mm long.

 

 
 
© 2014 Missouri Botanical Garden - 4344 Shaw Boulevard - Saint Louis, Missouri 63110