UC Berkeley Archaeobotany Laboratory Report #75 Pampa .

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UC Berkeley Archaeobotany Laboratory Report #75Pampa Grande, Argentina Capsicum AnalysisWritten for: Veronica LemaAnalyzed by: Katherine ChiouDate: 4/23/2013Three seeds collected from the Formative site of Pampa Grande, Argentina were analyzed in theUniversity of California, Berkeley McCown Archaeobotany Laboratory using an Olympus SZ61 microscope and an Olympus DP-72 camera. Measurements and photographs were taken usingthe Olympus MicroSuite program. Photographs were taken of the whole seed while lying flat andof the attachment scar. The measurements that were taken concerned whole seed and attachmentscar morphometrics (see list of attributes and Excel spreadsheet with seed data). The seeds werefound to be in excellent condition (desiccated), with testa largely intact. While the sizes of theseeds appear to be in the range of Capsicum seeds, it is possible that not all the seeds areexamples of domesticated Capsicum.Seed ID# PG1PG1 is an oval seed with no apparent “beak,” an attribute which usually distinguishes Capsicumfrom the rest of the Solanaceae. Of the domesticated chile peppers, only C. pubescens exhibitslittle to no beak. This seed, however, does not appear to be C. pubescens, a taxon characterizedby black seeds, reticulation in the testa, and pronounced seed margins. The seed, with itsruminate testa, could possibly be a Solanum. Given that our study has not included much in theway of wild Capsicum, that is a possibility as well.Seed ID#PG2PG2 is a round seed with a beak that appears to be Capsicum in nature. The shape of the seedmost resembles C. frutescens, a chile pepper that was domesticated in the Amazon/Caribbean.However, C. frutescens generally display a very smooth testa texture while this one appears to beruminate. Out of the wild seeds we have looked at, this seed also resembles C. chacoense and C.galapagoense (especially the latter), so there is a possibility that this one is wild as well. Wehave not studied enough wild taxa for me to determine this with confidence. I can say that it isnot C. pubescens, C. chinense, C. annuum, or C. baccatum.Seed ID#PG3The beak on this seed appears to be mostly intact. PG3 is an oval seed which is generally theshape associated with C. baccatum. The attachment scar has a low sphericity (.02), which isexhibited exclusively among the domesticates in C. baccatum as well. While C. baccatum,generally features a longer, upright beak as well, I would say that this seed appears to be a C.baccatum. Although the testa has worn away in most of the central portion of the seed, the outermargins appear to be tightly reticulated, which is also seen in C. baccatum.

Seed ID# PG1: Top is image of whole seed; Bottom features the attachment scar

Seed ID# PG2: Top is image of whole seed; Bottom features the attachment scar

Seed ID# PG3: Top is image of whole seed; Bottom features the attachment scar

IDPG1PG2PG3CollectionLemaLemaLemaCountry of mpa Grande?Pampa Grande?Pampa Grande?FaseGenus259‐433 ADCapsicum259‐433 ADCapsicum259‐433 ADCapsicumConditionGoodGoodExcellentSpeciesSeed ShapeSolanum?Ovalcf. C. chacoenseCircular/Pac ManC. baccatum? Oval

Relational Length (mm)Relational Width (mm)3.733.293.36RL:RWMax Length (mm)Perpendicular width (mm)ML:PW2.75 1.3563643.933.012.87 1.1463413.522.892.37 1.4177223.522.63Aspect Ratio1.381.21.42

Perimeter (mm)SphericityArea (mm 2)Diameter Max (mm)Diameter Mean (mm)Diameter Min 2.8113.340.496.873.63.222.52Testa textureRuminateRuminateTight reticulation

Beak ProminenceBeak Angle022Attachment scar length mm04015Attachment scar width mm1.51.071.84Attachment scar area (mm 2)0.180.270.210.240.180.36

Attachment length:Relational seed lengthAttachment Scar 0.02

University of California, Berkeley McCown Archaeobotany Laboratory using an Olympus SZ-61 microscope and an Olympus DP-72 camera. Measurements and photographs were taken using the Olympus MicroSuite program. Photographs were taken of th

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