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Arrojadoa

Arrojadoa: (Britton & Rose, 1920) Subfamily Cactoideae, tribe Cereeae. Plants low, shrubby, branching basally, little branched erect, semierect, or creeping. Roots tuberous or not. Stems slender, cylindical, sometimes segmented, green, to 2m (6.6 ft) long, 0.5-5cm (0.2-2in) in diameter. Ribs 7-17. Areoles close set. Spines small, often bristly. Apical flowering cephalia produced following each season's vegetative growth, producing ring-like clusters of white wool and redish bristles; vegetative growth can resume following flowering. Flowers often bourne in clusters from the apical cephalia, open during the day, bird pollinated, red, pink, purple, violet, yellow or white, tubular to 4.5cm (1.8 in) long; pericarpels and floral tubes naked; perianth barely expanding; stamens and styles included. Fruits berrylike, globose to pear-shaped, smooth, naked, juicy, purple, pink, rose or red, with white pulp, to 2 cm (0.8in) in diameter. Seeds ovoid to pear-shaped, black, tuberculate, to 1.5mm long. Distribution: eastern Brazil.

These cacti come from dry places in Brazil. They are rather frost tender plants that I keep at 40 degrees F. or higher. Water them less than average if in bigger pots, small pots prefered. Named in honor of Dr. Miguel Arrojado Lisboa to whom Brazil is indebted for the extensive botanical exploration of the semi-arid regions.

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Arrojadoa albifloraArrojadoa albiflora
Arrojadoa albiflora HU401 Urandi 1070m.
according to AH, a hybrid between A.rhodantha and A.multiflora.
Cutting was donated by James Pickering, Tucson, AZ.
Flowering plant in the collection of AWM
Arrojadoa aureispina
Arrojadoa aureispina (Buin.& Bred.) HU154
N.W. Caitite 200m
Arrojadoa nana
Arrojadoa nana
Arrojadoa nana = A.dinae ssp. nana
form albicoronata HU611
Grao Mogol Minas Gerais
Arrojadoa rhodantha
Arrojadoa rhodantha (Gurke) Br.& R.
form "horridispina", this form
has a thinner body than the type species
Arrojadoa dinae
Arrojadoa dinae (Buin.& Bred) HU399
Brazil, Bahia, Serra do Espinhaco,
S.E. of Urandi 900m
Arrojadoa rhodantha
Arrojadoa rhodantha (Gurke) Br. & R.
Brazil - Bahia, Piauhy, Pernambuco.
Photo taken in sunny area
Arrojadoa rhodantha
Arrojadoa rhodantha (Gurke) Br. & R.
Brazil, Bahia.
Photo taken in shade.
Arrojadoa segrendensis
Arrojadoa cafanauensis =
Arrojadoa segrendensis: HU216
Cafarnaum Bahia Brazil,
longer spines on bottom of plant.
Arrojadoa horstiana
Arrojadoa horstiana HU364
Mato Verde Minas Gerais
Arrojadoa aureispina
Arrojadoa aureispina:
Close up of stem.
Arrojadoa aureispina
Arrojadoa aureispina
close up of fower

Pictures Copyright Bob Ressler and Tony Mace, no reproduction without permission of the author.

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